JPH0764216A - Stereoscopic photographing device - Google Patents

Abstract

PURPOSE:To provide a stereoscopic photographing device for preventing the occurrence of the difference between an observed finder field and a real photographing range even in the case of photographing by a lens shutter camera with a stereoscopic adapter mounted. CONSTITUTION:As to the stereoscopic photographing device provided with the stereo adapter 100 for adjacently imprinting two images of the same object which are obtained by viewing from different view points on one frame of a film and a camera 20 capable of attaching the stereoadapter 100 to the front end of the photographic lens, the device is provided with a visual field forming means installed on the optical path of the finder and for selectively setting either of a normal photographing visual field and a stereoscopic photographing visual field, a detecting means for detecting whether or not the stereo adapter 100 is attached to the camera 20 and a switching means 37 for switching the normal photographing visual field and the stereoscopic photographing visual field through the visual field forming means based on the result detected by the detecting means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereo adapter for use in stereo photography and a stereo photography apparatus having a camera to which the stereo adapter can be attached.

[0002]

2. Description of the Related Art The principle of a stereo photography apparatus will be described with reference to FIG. The stereo adapter 12 mounted on the front side of the taking lens 11 on the object side has second reflecting mirrors 13a and 13b having a predetermined angle to the left and right with respect to the optical axis of the taking lens 11, and the second reflecting mirrors 13a and 13b. The first reflection mirror 14a, substantially parallel to
14b are arranged. The subject 15 is the first and second reflection mirrors 14a, 14b, 13a, 13b.
Is divided into two parts, and an image is formed by the taking lens 11 on one taking frame (film) 16 of length d. This photographic film is observed as a stereoscopic image by separately observing the two-divided images 15a and 15b with the left and right eyes.

When this stereo adapter (hereinafter referred to as "adapter") is attached to a lens shutter camera for photographing, the finder field of view and the actual photographic range are different, that is, the actual photographic range is larger than the observed finder field of view. Since it becomes narrower in the lateral direction, inconvenience occurs.

[0004] In addition, stereo photography performed using this adapter may be unrealistic because it has a vertically long screen because the same subject is photographed on the left and right sides of one film frame.

Further, the conventional adapter has a variety of shooting conditions, such as setting a specific focal length, placing a subject at a shooting distance within a certain range, and setting an aperture within a certain range due to the structure of the adapter. Due to such restrictions, the lens shutter camera equipped with an AE (automatic exposure) mechanism, an AF (autofocus) mechanism, a PZ (power zoom) mechanism, etc., is not familiar with a lens shutter camera with a built-in zoom lens. For this reason, conventionally, there has been no one that can be attached to a lens shutter camera.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. Even when an adapter is mounted on a lens shutter camera for taking a picture, there is a difference between the finder field of view observed and the actual picture taking range. It is an object of the present invention to provide a stereo photography device that does not cause the noise.

Further, the present invention provides a stereoscopic photography apparatus capable of providing a stereoscopic photograph with a realistic sensation, while performing stereoscopic photography in which the same subject is photographed on the left and right sides of one film frame. With the goal.

The present invention also provides an AE mechanism, an AF mechanism, a PZ
When an adapter is attached to a lens shutter camera equipped with a mechanism or the like for shooting, the shooting conditions necessary for stereo shooting are automatically set, and as a result, the AE mechanism, AF mechanism, P
An object of the present invention is to provide a stereo photography device that enables stereo photography with a lens shutter camera including a Z mechanism or the like.

[0009]

SUMMARY OF THE INVENTION The present invention is a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one frame of film, and a camera in which this stereo adapter can be attached to the front end of the taking lens. And a stereoscopic photographing apparatus having a field of view forming means for selectively setting one of a normal photographing field of view and a stereoscopic photographing field of view in a viewfinder optical path; detection for detecting whether or not a stereo adapter is attached to a camera Means; and a switching means for switching the normal photographing field of view or the stereoscopic photographing field of view by the field of view forming means based on the detection result of the detecting means.

Further, according to the present invention, a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one frame of film, and a camera capable of mounting the stereo adapter on the front end of its photographing lens. In the stereo photography device having the above, the stereo adapter integrally has a stereo photography field forming member located in front of a finder provided in the camera in a state where the stereo adapter is attached to the camera.

Further, according to the present invention, a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one frame of film; the stereo adapter can be attached to the front end of the photographing lens, And a camera having a screen size switching mechanism capable of selectively switching the size of the shooting screen between a standard size and a landscape size having an aspect ratio different from the standard size; Detecting means for detecting whether or not the stereo adapter is attached to the camera; and, when the detecting means detects attachment of the stereo adapter to the camera, activates the screen size switching mechanism to switch the shooting screen size to the landscape size. It is characterized by having an operating means.

Further, the present invention provides a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one frame of film, and a camera capable of mounting the stereo adapter on the front end of its photographing lens. In the stereo photography apparatus having the above, the taking lens has a variable focal length, has a focal length detecting means for detecting the focal length, and the stereo adapter has a first reflecting member for reflecting subject light from the same subject. And a pair of second reflecting members for reflecting the subject light reflected by the first reflecting member toward the photographing lens, the first reflecting member having an incident angle of the subject light with respect to the second reflecting member. In order to change, it is rotatably provided around an axis extending in a direction orthogonal to the optical axis of the photographing lens, and is detected by the focal length detecting means. Depending on the focal length, is characterized in that it is configured to change the incident angle of the first reflecting member is rotated relative to the second reflection member of the first reflecting member.

Further, according to the present invention, a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one film frame, and a camera capable of mounting the stereo adapter on the front end of its photographing lens. In the stereo photography apparatus having, a stereo adapter includes a first reflecting member that reflects subject light from the same subject and a second reflection member that reflects the subject light reflected by the first reflecting member toward a taking lens. A pair of members are provided, and the first reflecting member is rotatably provided about an axis extending in a direction orthogonal to the optical axis of the photographing lens in order to change the incident angle of the subject light with respect to the second reflecting member. The camera has a rotary position detecting means for detecting a rotary position of the first reflecting member, and the camera has a distance measuring means for detecting a subject distance. The first reflection member is rotated to change the incident angle of the first reflection member with respect to the second reflection member in accordance with the subject distance detected by the distance measuring means. Is characterized by.

Further, according to the present invention, a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one film frame, and a lens shutter capable of mounting the stereo adapter on the front end of the photographing lens. In a stereo photography apparatus having a camera, a lens shutter camera includes a distance measuring unit that detects a subject distance; a focusing mechanism that focuses a photographing lens according to the subject distance detected by the distance measuring unit; a lens shutter camera Means for detecting whether or not the stereo adapter is attached to the lens shutter camera; and when the detection means detects attachment of the stereo adapter to the lens shutter camera, a predetermined distance is added to the subject distance detected by the distance measuring means. The focusing distance is added to the focusing mechanism according to the subject distance added by the predetermined distance. It is characterized by having; focuses control means.

Further, according to the present invention, a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one film frame, and a lens shutter capable of mounting the stereo adapter on the front end of the photographing lens. In a stereo photography apparatus having a camera, a lens shutter camera has a distance measuring means for detecting a subject distance by receiving infrared light projected from the light projecting portion toward the subject by the light receiving portion; An optical path deflecting unit for advancing and retracting the optical path, which is provided in front of the light receiving unit of the distance unit, for advancing and retracting the optical path; an advancing and retracting unit for moving the optical path deflecting member forward and backward of the light receiving unit; Detection means for detecting whether or not the adapter is attached; and this detection means is a stereo camera for the lens shutter camera. When detecting the mounting of Puta, actuating means for advancing the optical path deflecting member is actuated said moving means in front the light receiving portion; and characterized by having a.

Further, according to the present invention, a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one film frame, and a lens shutter capable of mounting the stereo adapter on the front end of the photographing lens. In a stereo photography apparatus having a camera, the lens shutter camera has distance measuring means for detecting a subject distance by receiving infrared light projected from the light projecting unit toward the subject by the light receiving unit. And the stereo adapter integrally has an optical path deflecting member for deflecting the optical path, which is positioned in front of the light receiving section in a state where the stereo adapter is mounted on the lens shutter camera.

Further, according to the present invention, a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one frame of film, and a camera capable of mounting the stereo adapter on the front end of its photographing lens. In a stereo photography apparatus having: a camera, an automatic focusing mechanism; a detection means for detecting whether or not a stereo adapter is attached to the camera; and, when the detection means detects attachment of the stereo adapter to the camera, the automatic It is characterized in that it has a photographing distance fixing means for fixing the photographing distance determined by the focusing mechanism to a predetermined photographing distance.

Further, according to the present invention, a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one film frame, and a camera capable of mounting the stereo adapter on the front end of its photographing lens. In a stereo photography apparatus having: a camera, an automatic exposure mechanism; detection means for detecting whether or not a stereo adapter is attached to the camera; and when the detection means detects attachment of the stereo adapter to the camera, It is characterized by including aperture value setting means for setting the aperture size of the exposure mechanism to a predetermined aperture value or less.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to illustrated embodiments. FIG. 1 is a perspective view showing a camera 20 to which the present invention is applied and an adapter 100 attached to the camera 20. The camera 20 is a lens shutter camera with a built-in zoom lens, which has an AE mechanism, an AF mechanism, a PZ mechanism, and a screen size switching mechanism. FIG. 2 shows a control block of the camera 20.

The camera 20 has a fixed lens barrel 22 integrally formed on the front portion of its camera body 21.
A zoom lens barrel 23 that moves back and forth in the front-rear direction of the camera 20 based on the operation of the zooming switch 36 is provided inside the unit 2. The zoom lens barrel 23 is the zoom lens barrel 2
3, a cam pin (not shown) provided in 3 engages with a cam groove 26a formed in a cam ring 26 fitted to the zoom lens barrel 23, and the cam ring 26 is rotated by a zoom motor 28. It has a well-known structure which is moved back and forth by. Although not shown in the figure, a gear train (not shown) is interposed between the drive pinion 28 a of the motor 28 and the outer peripheral gear 26 c formed at the rear end of the cam ring 26. The zoom motor drive circuit 27 is controlled by the control means 120 such as a microcomputer so as to set the zoom lens barrel 23 to a predetermined focal length, and the code pattern 26b formed on the outer periphery of the cam ring 26 and the code pattern 26b. The zoom motor 28 is driven so as to zoom the zoom lens barrel 23 while grasping the current focal length by the zoom code brush 29 that slides on the code pattern 26b and detects the rotational position of the cam ring 26.

On the upper portion of the front wall 21a of the camera body 21,
A finder objective window 31 is provided, and an infrared projector 32 and an infrared receiver 33 of the active distance measuring device are provided on the left and right of the finder objective window 31. Further, the front wall 21a is provided with a stroboscopic light emitting portion 34 and a light receiving portion 35 having a photometric sensor (not shown) therein.

A release button 35 is provided on one side of the upper part of the camera body 21, and the zooming switch 3 for changing the focal length of the photographing lens is provided behind it.
6 is provided. This zooming switch 36
Wide zoom switch 36 that changes the focal length to the wide-angle side
a and a tele-zoom switch 36b for changing to the telephoto side. A screen size switching mechanism 40 provided in the camera 20 is provided at the center of the upper portion of the camera body 21.
A screen size changeover switch 37 for operating (FIGS. 3 to 5) is provided. The switch 37 is used to slide the left and right sides to change the size of the shooting screen into two sizes, namely
This is an operation switch for switching between the standard size of 24 mm x 36 mm and the so-called panoramic size (horizontal size) of 13 mm x 36 mm.

FIG. 3 shows the screen size switching mechanism 40 and the finder optical system 60 provided in the camera 20. The real image type finder optical system 60 optically includes, from the objective side, a moving lens 61 and a moving lens 62 as an objective optical system, an image erecting prism 63 as an erecting optical system, and a photographing range at the time of standard size photographing. A field frame 64 having a frame and defining a field of view at the time of standard-size shooting;
An eyepiece lens 65 as an eyepiece optical system is provided, and the viewfinder magnification can be varied by moving the moving lens 61 and the moving lens 62 in the front-back direction along the viewfinder optical axis O in a predetermined relationship. Have

Image erecting prism 63 facing the field frame 64
A panoramic field frame 41, which is integrally formed with a screen size regulation plate 43 which is a component of the screen size switching mechanism 40, between the exit surface of the device and the field frame 64 and which regulates the field of view at the time of panoramic size photography can be moved forward and backward. It has been configured.
The panoramic field frame 41 is a screen size switching mechanism 40.
When the size of the shooting screen is switched to the panorama size by, the size of the viewfinder field is changed to the size corresponding to the size of the shooting screen that has been changed to the panoramic size. A mask member that shields light of a certain width. The screen size switching mechanism 40 will be described below.

As shown in FIGS. 4 and 5, the camera 20
The screen size switching mechanism 40 provided so as to correspond to the photographing opening 19 has a pair of L-shaped screen size regulating plates 42 and 43. The screen size regulation plate 42 has a guide portion 42 a and a screen regulation portion 42 b which are orthogonal to each other, and the screen size regulation plate 4
3 is a guide portion 43a and a screen regulating portion 43 which are orthogonal to each other.
b. The screen size regulation plate 43 is also
The panoramic visual field frame 41 described above is integrally provided at a position offset rearward from one end of the upper portion thereof. The panoramic field frame 41 is formed with an opening 41a for forming a viewfinder field having a size corresponding to a panoramic shooting screen. The upper and lower sides of the opening 41a are light-blocking so as to block a certain width above and below the normal viewfinder field. It is formed as the portion 41b.

The screen size regulating plate 42 has a guide portion 42a, and a linear guide groove 42 along the longitudinal direction thereof.
Two guide pins 49a and 49b fixed to a fixing portion (not shown) of the camera body 21 are fitted into the linear guide groove 42c. As a result, the screen size regulation plate 42 is fixed by the guide pins 49a, 49a.
Due to the fitting relationship between b and the linear guide groove 42c, the linear guide groove 42c is movably guided in the vertical direction within the effective length range.

A pair of screen size control plates 42, 43
Are arranged in a substantially point-symmetrical relationship with respect to an intersection D of the vertical centerline B-B and the horizontal centerline C-C of the photographing aperture 19, and the rectangles corresponding to the photographing aperture 19 are arranged. It constitutes the opening.

The screen size regulating plate 43 has a guide portion 43a and a linear guide groove 43 along the longitudinal direction thereof.
Two guide pins 50a and 50b fixed to a fixed portion (not shown) of the camera body 21 are fitted into the linear guide groove 43c. As a result, the screen size regulation plate 43 has the guide pins 50a, 50
Due to the fitting relationship between b and the linear guide groove 43c, the linear guide groove 43c is movably guided in the vertical direction within the range of the effective length of the linear guide groove 43c.

Further, the screen size regulation plate 42 has a support pin 5 at the intersection of the guide portion 42a and the screen regulation portion 42b.
1 and the screen size regulation plate 43 includes the guide portion 4
A support pin 55 is provided at the lower end of 3a. Rotation support pin 5 fixed to a fixed portion (not shown) of the camera body 21
An interlocking bar 52 is rotatably supported by 3, and a long hole 52a at one end and a long hole 52b at the other end of the interlocking bar 52 are fitted in the support pins 51 and 52, respectively. A coil spring 54 is wound around the rotation support pin 53. One end of the coil spring 54 is attached to an engagement pin 55 which is planted in a fixed portion (not shown) of the camera body 21, and the other. The end portion is engaged with an engagement pin 56 that is planted in the interlocking bar 52. As a result, the interlocking bar 52 always receives a rotational biasing force in the clockwise direction of FIG. 4 about the rotational support pin 53, and in its free state, the upper end of the linear guide groove 42c abuts the guide pin 49a. Then, the linear guide groove 43c is rotated until the lower end portion of the linear guide groove 43c is brought into contact with the guide pin 50b. In addition, the interlocking bar 52 and the rotation support pin 53
Is configured so that the vertical movement of the screen size regulation plate 42 can be transmitted to the screen size regulation plate 43 as the same vertical movement amount in the opposite direction with respect to the center line BB. .

On the other hand, the panoramic field frame 41 is located between the exit surface of the image erecting prism 63 and the field frame 64 facing the field frame 64 in the state shown in FIG. Withdraw from the viewfinder optical path and set the size of the viewfinder field to the normal size corresponding to the standard size. Further, the panoramic field frame 41 is displayed in the state shown in FIG. 5 in which the screen size regulation plate 43 moves downward,
With this movement, the light-shielding portions 41b positioned above and below the opening 41a are moved to the upper and lower sides of the viewfinder field, with the light-shielding portions 41b positioned above and below the opening 41a advancing to the viewfinder optical path between the exit surface of the image erecting prism 63 facing the field frame 64 and the field frame 64. Position it so that the viewfinder field size is a small viewfinder field size that corresponds to the panorama size.

An electromagnet 58, which can be switched between excitation and demagnetization by the control means 120 (FIG. 2) based on the screen size changeover switch 37, is fixed to a fixed portion (not shown) of the camera body 21, and the interlocking bar 52 is provided. An armature 57 such as an iron piece is fixed at a position facing the electromagnet 58. Therefore, when the electromagnet 58 is excited, the armature 57 is attracted and the interlocking bar 52 is rotated counterclockwise in FIG. 4, and the screen size regulation plate 42 is moved upward from the state in FIG. 4 and moving the screen size regulation plate 43 downward from the state of FIG. 4 to move the respective screen regulation portions 42b and 43b to the photographing opening 1.
The screen size can be switched to the panorama size by advancing within 9.

As shown in FIGS. 1, 6 and 7, the front end portion 23a of the zoom lens barrel 23 and the adapter 100 have a construction in which they can be connected to each other using a known bayonet mount. That is, the zoom lens barrel 23 has a plurality of engaging claws 24 on the outer periphery of the front end portion 23a, and the adapter 10
0 is the front end portion 23a of the zoom lens barrel 23 on the rear wall 101.
It has a connector part 102 for connecting with. The connector portion 102 has a mount portion 111 with which the front surface of the engaging claw 24 abuts, and an engaging claw 110 that is located slightly behind the mount portion 111 and is formed in the same number as the engaging claw 24. . The plurality of engaging claws 110 are attached to the zoom lens barrel 23.
The adapter 100 is attached to the camera 20 by engaging with the side engaging claw 24.

At the front end 23a of the zoom lens barrel 23,
A plurality of electric contact pins 25 are formed to project. The plurality of electric contact pins 25 are provided on the front end portion 2 of the zoom lens barrel 23.
When 3a is connected to the adapter 100, the connector portion 10
It is configured to be electrically connected to a plurality of corresponding electrical contact lands 112 formed on the second mount portion 111. The electrical contact pin 25 and the electrical contact land 1
Reference numeral 12 indicates whether or not the adapter 100 is attached to the camera 20 by the stereo adapter attachment detector 134, and the mirror angle information is transmitted to the mirror motor drive circuit by the encoder 181 provided in the adapter 100.
Further, it is provided for supplying a drive current from the camera 20 side to the mirror drive motor provided in the adapter 100.

In the camera 20 according to the present invention, the switch 3
The size of the shooting screen can be switched to the panorama size by the operation of 7, or the stereo adapter mounting detection unit 1
When 34 detects the mounting of the adapter 100, the electromagnet 58 of the screen size switching mechanism 40 is excited to switch the size of the photographing screen to the panoramic size. This control is performed by the control means 120. According to this configuration, when taking a stereo photograph, the same subject is photographed on the left and right sides of one standard-size film frame, and the left and right images are formed as a vertically long screen. On the other hand, since the left and right subject images are formed as a horizontally long screen, it is possible to obtain a stereoscopic photograph (FIG. 9) with a sense of reality. It should be noted that this configuration can be applied not only to the lens shutter camera but also to a single lens reflex camera.

The camera 20 has a stereo visual field switching mechanism 140 shown in FIG. The stereo visual field switching mechanism 140 is provided in the camera body 20 in the vicinity of the finder optical system 60, and has a stereo visual field plate 141 positioned adjacent to the panoramic visual field frame 41 and parallel to the panoramic visual field frame 41. is doing. The stereo view switching mechanism 140 is not shown in FIG.

The stereo visual field plate 141 has a pair of linear guide grooves 143 formed in the vertical direction, and a fixed portion (not shown) of the camera body 21 fitted in the linear guide grooves 143. Guide pin 14 fixed to
4, the linear guide groove 143 is supported so as to be movable in the vertical direction within the range of the length thereof. A tension spring 146 is hooked between an engaging portion 145 on one side of the stereo visual field plate 141 and an engaging pin 147 implanted in a fixed portion (not shown) of the camera body 21, and Thus, the stereo visual field plate 141 is constantly urged downward by the action of the tension spring 146. The stereo visual field plate 141 also has a light blocking portion (stereo photography visual field forming member) 142 that can move forward and backward in the finder optical path, and this light blocking portion 142 is arranged side by side on the shooting screen size during stereo photography, that is, on the film surface. An opening 142a for forming a viewfinder field having a size corresponding to the screen size of either one of the two images formed by the same subject is formed.

When the stereo adapter mounting detection unit 134 detects the mounting of the adapter 100, the electromagnet 149 excited by the control means 120 based on this detection is fixed to the fixed portion (not shown) of the camera body 21. An armature 148 such as an iron piece is fixed to the stereo visual field plate 141 at a position facing the electromagnet 149. With this configuration, in the state where the electromagnet 149 is demagnetized, the stereo visual field plate 141 is
2 is retracted from the finder optical path, and when the electromagnet 149 is excited, the electromagnet 149 attracts the armature 148 against the tension spring 146 and the light shielding portion 142 is moved to the finder optical path. It is moved to the position Q indicated by the chain double-dashed line in FIG. 10 to be advanced, and the viewfinder field is switched to a viewfinder field of a size corresponding to the shooting screen size during stereo photography.

Therefore, as shown in FIG. 12, since the panoramic field frame 41 and the light shielding portion 142 of the stereo field plate 141 overlap the viewfinder field V when the photographing screen size is the standard size, the upper and lower ends of the opening 41a. A portion indicated by a diagonal line AV in the drawing, which is regulated by the left and right ends of the opening 142a, is visually recognized as a viewfinder field during stereo photography. Therefore, according to this configuration, when the stereoscopic photography is performed, the viewfinder field and the actual photography screen correspond to each other, so that the actual photography range is not mistakenly recognized in the stereo photography.

Instead of the above-mentioned stereo visual field switching mechanism 140, for example, as shown in FIG. 14, a viewfinder visual field at the time of taking a stereo picture is formed by projecting from the upper rear of the adapter 100 toward the rear (camera 20 side). The light-shielding member (stereo photographing field forming member) 103 may be formed integrally with the adapter 100. In the light blocking member 103, when the adapter 100 is attached to the camera 20, a light blocking plate portion 104 having an opening 104a formed in the center thereof is located in front of the finder objective window 31 of the camera 20, and the opening 104a is the light blocking member. It plays the same role as the opening 142a of the portion 142. The light-shielding plate portion 104 is formed so as not to come into contact with the finder objective window 31 and to be positioned very close to the finder objective window 31 in a state where the zoom lens barrel 23 is most stored in the fixed lens barrel 22. ing.

In the above, the light shielding member 103 and the light shielding portion 142 are mentioned as specific examples of the stereoscopic photographing visual field forming member, but the stereoscopic photographing visual field forming member is not limited to these concrete examples. The stereoscopic imaging visual field forming member is, in short,
Anything that allows the photographer to visually recognize the viewfinder field range corresponding to the shooting screen during the stereoscopic photography is acceptable. For example, if the liquid crystal is masked outside the photographing range on the field frame 64 during stereo photography, and the stereo adapter mounting detection unit 134 does not detect the mounting of the adapter 100, the liquid crystal portion is not energized and the liquid crystal portion is blocked. When the stereo adapter mounting detector 134 detects the mounting of the adapter 100 in the light-transmitting state, the liquid crystal portion may be energized to make the liquid crystal portion opaque or semi-transparent. If a transparent plate on which a shooting range frame indicating a shooting range during stereo photography is drawn is provided in the optical path of the viewfinder so that the stereo adapter mounting detection unit 134 does not detect the mounting of the adapter 100, the above-mentioned transparent When the plate is retracted from the finder optical path and the stereo adapter mounting detection unit 134 detects mounting of the adapter 100. It may be configured for advancing the transparent plate finder optical path.

The camera 20 also has a stereo visual field varying mechanism 150 shown in FIG. Like the stereo visual field switching mechanism 140, the stereo visual field changing mechanism 150 is provided in the camera body 20 in the vicinity of the finder optical system 60, and moves back and forth in the finder optical path between the visual field frame 64 and the eyepiece 65. The zoom lens 152 has a variable power lens 152. It should be noted that this stereo visual field varying mechanism 150 is shown in FIG.
Not shown in FIG.

The zoom lens 152 is a so-called magnification lens for enlarging the finder field AV shown in FIG. 12 to a size of the finder field V for observation, and the lens frame 1
It is supported by 53. This lens frame 153 is
It is fixed to a driven plate 151 that can move in the vertical direction. The driven plate 151 has a pair of linear guide grooves 154 formed in the vertical direction, and is fixed to a fixed portion (not shown) of the camera body 21 fitted in the linear guide grooves 154. The guide pin 155 supports the linear guide groove 154 so as to be vertically movable within the range of the length thereof. A tension spring 157 is hooked between an engaging portion 156 on one side of the driven plate 141 and an engaging pin 158 implanted in a fixed portion (not shown) of the camera body 21. The driven plate 151 is constantly urged downward by the action of the tension spring 157.

When the stereo adapter attachment detector 134 detects attachment of the adapter 100 to the fixing portion (not shown) of the camera body 21, the electromagnet 160 excited by the control means 120 based on the detection is fixed. An armature 159 such as an iron piece is fixed to the driven plate 151 at a position facing the electromagnet 160. With this configuration, when the electromagnet 160 is demagnetized, the driven plate 151 is positioned at the lower position shown in FIG. 11 where the variable power lens 152 is retracted from the finder optical path, and when the electromagnet 160 is excited, the electromagnet 160 is moved. Attracts the armature 159 against the tension spring 157, and moves the variable power lens 152 to the position R shown by the chain double-dashed line in FIG. 11 for advancing into the finder optical path, thereby expanding the viewfinder field AV.

According to the stereo visual field changing mechanism 150, the finder visual field AV, which is formed smaller than the finder visual field V as shown in FIG.
Since it is possible to magnify and observe with the variable power lens 152, it is possible to make the view field of view during stereo photography easier to see.

As shown in FIG. 13, a field frame 64 and an eyepiece lens 65 are used instead of the stereo field-of-magnification variable mechanism 150 described above.
A movable variable magnification lens 161 that is always located in the finder optical path between and is movable along the finder optical axis O;
The movable variable-magnification lens 161 and the eyepiece lens 65 constitute an eyepiece optical system, and the stereo adapter mounting detection unit 13
4 detects the mounting of the adapter 100, the drive mechanism 162 shown by the alternate long and short dash line is actuated to move the variable magnification lens 16
1 may be moved along the viewfinder optical axis O by a predetermined distance to enlarge the viewfinder field of view Av for observation.

When the size of the photographing screen is a panoramic size and stereo photography is performed, the aspect ratio of the photographing screen (either the left or right screen shown in FIG. 9) is close to the aspect ratio of the standard size (standard size photographing). The aspect ratio of the screen is
24: 36 = 2: 3, and the aspect ratio of the shooting screen is 13: 18≈2: 3 when the size of the shooting screen is a panoramic size and stereo photography is performed). In the above-described embodiment, the panoramic field frame 41 and the stereo field plate 141 form the viewfinder field Av in the case of stereo photography in which the size of the shooting screen is the panoramic size, and the viewfinder field Av is moved by the variable magnification lens 152 or movable. The configuration is such that the image is magnified and observed by the variable magnification lens 161, but the aspect ratio of the standard size shooting screen and the aspect ratio of the shooting screen when the size of the shooting screen is a panoramic size and stereo photography is similar. From the panoramic field frame 41, the stereo field plate 141, the variable power lens 152 or the movable variable power lens 1.
The same effect can be obtained by simply multiplying the focal length of the objective lens of the finder by a predetermined value in stereo photography without using 61 or the like. With this configuration, when the focal length of the taking lens is 35 mm, the focal length of the objective lens of the finder may be set so as to correspond to the field of view of the focal length of the taking lens of 70 mm. That is, the focal length of the objective lens of the viewfinder is
It may be set to twice the normal shooting. Some examples having this configuration will be given below.

As shown in FIG. 15, the moving lens 61 and the moving lens 62 of the finder optical system 60 are replaced by those of the photographic optical system instead of the above-described stereo visual field variable power mechanism 150 or the mechanism using the movable variable power lens 161. The same effect can be obtained by using the finder moving lens drive mechanism 170 that is driven independently of the zoom mechanism. In this embodiment, the panoramic visual field frame 41 includes the screen size regulation plate 4
It is provided as a member different from 3, and is configured to advance into the viewfinder optical path only when the size of the photographing screen is a panoramic size and stereo photography is not performed.

This finder moving lens driving mechanism 170
Moves the moving lenses 61 and 62 back and forth in a predetermined relationship by the cam plate 173 which is moved in the arrow X direction in the drawing by the finder lens drive motor 172 via the gear train 171. A cam pin 61a and a cam pin 62a are formed on the movable lenses 61 and 62, respectively, and these cam pins 61a and 62a are attached to the cam plate 1 respectively.
73 are engaged with cam grooves 174 and 175, respectively.

A zoom code plate 176 is formed on the cam plate 173. A zoom code brush 177 fixed to a fixed portion (not shown) of the camera body 21 and connected to the finder motor drive circuit 178 slides on the zoom code plate 176, so that the finder motor drive circuit 178 is The finder magnification of can be detected. Finder motor drive circuit 1
The control means 120 connected to 78 causes the finder motor drive circuit 178 to move the movable lenses 61 and 62 in association with the change of the focal length of the photographing lens by zooming the zoom lens barrel 23 so as to obtain a predetermined finder magnification. Control.

The control circuit 120 controls the finder motor drive circuit 178 to control the finder motor drive circuit 178 when the photographing operation other than the stereo photography is performed, that is, when the stereo adapter attachment detection unit 134 does not detect the attachment of the adapter 100. Moving lens 61,
When the stereo adapter mounting detection unit 134 detects mounting of the adapter 100, the finder motor drive circuit 1 is controlled to move 62 (normal control).
78 is controlled to move the movable lenses 61 and 62 in a state where the finder magnification at the time of the normal control is always multiplied by a predetermined magnification (preferably about 2 times as described above).
Therefore, also with this configuration, the same effect as that of the above-described stereo visual field varying mechanism 150 or the mechanism using the movable variable magnification lens 161 can be obtained.

Further, the finder moving lens driving mechanism 17
Instead of 0, as shown in FIG. 16, the adapter 100 is formed so as to project rearward (toward the camera 20) from the upper portion,
The viewfinder field multiplying member 105 may be formed integrally with the adapter 100. Also in this embodiment, the panoramic visual field frame 41 is provided as a separate member from the screen size regulation plate 43, as in the above embodiment, and is in the viewfinder optical path only when the size of the photographing screen is the panoramic size and not the stereo photography. It will be configured to advance to. In the finder visual field multiplying member 105, the variable magnification lens 106 provided in the center of the finder visual field multiplying member 105 is located in front of the finder objective window 31 of the camera 20 in a state where the adapter 100 is mounted on the camera 20. This variable power lens 106 is
This is a multiplication lens for increasing the magnification of the finder, and it is a lens for multiplying the finder magnification by a predetermined value (about 2 times). The viewfinder field multiplying member 105 includes the zoom lens barrel 23 and the fixed lens barrel 22.
It is formed at a position where it does not come into contact with the finder objective window 31 in the most stored state. Therefore, also with this configuration, the same effect as that of the above-described stereo visual field varying mechanism 150 or the mechanism using the movable variable magnification lens 161 can be obtained.

Further, by using a mechanism similar to the stereo visual field varying mechanism 150 shown in FIG.
The objective lens of the viewfinder, that is, a variable-magnification lens that makes the focal length of the movable lenses 61 and 62 a predetermined magnification (about 2 times) is replaced, and this variable-magnification lens is used before, after, or between the movable lenses 61 and 62 during stereo photography. The same effect can be obtained even with the configuration in which the finder is advanced into the optical path. Also in this embodiment, similarly to the above-mentioned embodiment, the panoramic field frame 41
Is provided as a member separate from the screen size regulation plate 43, and is configured to advance into the finder optical path only when the size of the shooting screen is a panoramic size and not stereo photography.

In the configuration according to the present invention in which the size of the photographing screen is switched to the panoramic size during stereo photography, the photographing field angle during stereo photography is narrower than the photographing field angle during standard size photography. Therefore, by linking the switching of stereo photography, the strobe irradiation angle is narrowed so as to correspond to the shooting angle of view during stereo photography. The amount can substantially increase the guide number when taking a stereo photo. Some examples having this configuration will be given below.

For example, the strobe device 21 shown in FIG.
The drive mechanism 200 including 0 can narrow the irradiation angle of the strobe during stereo photography so as to correspond to the photography angle during stereo photography.
In the figure, the finder moving lens driving mechanism 170 described above is used.
The same members as are denoted by the same reference numerals. The cam plate 173 'in this embodiment further includes a cam groove 211 for strobe light formed on the cam plate 173, has a light emitting tube 212, and is supported so as to be movable in a direction parallel to the photographing optical axis. The reflector 213 can be moved via the cam pin 214 fixed to the reflector 213 and the cam groove 211. The reflector 213 is the camera body 2
It is located at a position facing the stroboscopic light emitting portion 34 inside 1. A convex Fresnel lens (not shown) for condensing the light from the arc tube 212 is fixed to a fixed portion (not shown) of the camera body 21 between the strobe light emitting portion 34 and the reflector 213. It is provided. In this embodiment, when the stereo adapter mounting detection unit 134 does not detect the mounting of the adapter 100, the control circuit 120 controls the finder motor driving circuit 178 so that the finder field of view and the illumination angle of the strobe device 210 are the shooting screen by the shooting lens. To control the moving lenses 61, 62 and the reflector 213 to move (normal control),
On the other hand, when the stereo adapter mounting detection unit 134 detects the mounting of the adapter 100, the finder motor drive circuit 178 constantly applies a predetermined magnification (about 2 times) to the finder magnification during the normal control. The moving lenses 61 and 62 are controlled to move (stereo control). By this stereo control, the irradiation angle of the strobe device 210 is always narrower (about 1/2) than the irradiation angle at the time of the above-mentioned normal control, so that the strobe light from the strobe device 210 can be effectively used, and a stereo photograph is obtained. The guide number at the time of shooting can be substantially increased.

Further, as shown in FIG. 18, the adapter 1
00, Fresnel lens 1 for narrowing the flash irradiation angle
The irradiation angle changing member 107 including 08 may be integrally provided. The Fresnel lens 108 preferably has a strobe irradiation angle of about 1/2, and the adapter 10
When 0 is attached to the camera 20, it is located in front of the strobe light emitting section 34 (on the object side). Even with this configuration, the strobe light from the strobe device 210 can be effectively used,
The guide number for stereo photography can be increased substantially.

Also, by using the irradiation angle changing mechanism (irradiation angle changing means) 220 shown in FIG. 19, the irradiation angle of the stroboscope at the time of stereo photography is narrowed so as to correspond to the shooting angle of view at the time of stereo photography. be able to. This irradiation angle changing mechanism 220 uses a mechanism substantially similar to the above-described stereo visual field changing mechanism 150, and the variable magnification lens 152 of the stereo visual field changing mechanism 150 has the irradiation angle changing mechanism 22.
At 0, it is replaced with a Fresnel lens 221 that narrows the strobe irradiation angle to about 1/2. In the figure, members that are substantially the same as those of the stereo view field varying mechanism 150 described above are denoted by the same reference numerals. Fresnel lens 221
The stereo adapter mounting detector 134 is the adapter 10.
When the attachment of 0 is detected, the strobe light emitting section 34 and the strobe light emitting section 3 provided inside the camera body 21 are provided.
When the stereo adapter attachment detection unit 134 does not detect the attachment of the adapter 100 when the stereo adapter attachment detection unit 134 does not detect the attachment of the adapter 100, the light is emitted from the stereoscopic adapter attachment detection unit 134. It is configured to be retracted from between the reflector and the reflector. SO in the figure is a strobe optical axis extending parallel to the photographing optical axis. Even with this configuration, the strobe device 2
The strobe light from 10 can be effectively used, and the guide number at the time of stereoscopic photography can be substantially increased.

The Fresnel lens 10 in the above embodiment is used.
8 and 221 may be convex lenses.

Also, using the irradiation angle changing mechanism (irradiation angle changing means) 230 shown in FIG. 20, the irradiation angle of the strobe during stereo photography is narrowed so as to correspond to the shooting angle of view during stereo photography. be able to. The irradiation angle changing mechanism 230 includes a cam plate 2 supported so as to be movable in a direction orthogonal to the strobe optical axis SO (direction of arrow T in the drawing).
Has 31. The cam plate 231 has a switch operating section 232 exposed to the outside of the camera body 21, and is moved in the arrow T direction by a slide operation of the switch operating section 232 by the photographer. The cam plate 231 also has a cam groove 233 formed in a predetermined shape. The cam groove 233 is supported in the cam groove 233 so as to be movable in the front-rear direction along the strobe optical axis SO and has an arc tube 233. A cam pin 235 formed on the reflector 234 is fitted therein. A convex Fresnel lens (not shown) for condensing the light from the arc tube 233 is provided between the strobe light emitting section 34 and the reflector 234, and the camera body 21.
It is fixedly provided to the fixing part (not shown). With the above configuration, when the shooting screen is not the standard size stereo photo shooting, the switch operation unit 232 is positioned on the T2 side in the drawing, that is, the flash irradiation angle is the standard size shooting. When a stereoscopic image is taken in which the screen is made to correspond to the screen (normal state) and the shooting screen has a panoramic size, the switch operation unit 232 is used.
Is located on the T1 side in the drawing, and the reflector 234 is attached to the cam groove 23.
It is moved back along the profile of No. 3 to make the irradiation angle of the strobe correspond to the photographing screen of stereo photography (stereo state). The irradiation angle of the strobe in this stereo state is about 1 of the irradiation angle in the normal state.
It is preferably set to / 2. Therefore, the cam groove 233
The shape is set such that when the switch operating portion 232 is located on the T1 side in the figure, the irradiation angle of the strobe is about 1/2 of the irradiation angle in the normal state. In addition to the above configuration, if the configuration is such that the stereo photography mode is switched in conjunction with the operation of the switch operation unit 232.
The irradiation angle of the strobe in the stereo photography mode is always about 1/2 of the irradiation angle in the normal state. Therefore, also with this configuration, the stroboscopic light can be effectively used, and the guide number at the time of stereoscopic photography can be substantially increased.

Further, by using the irradiation angle changing mechanism (irradiation angle changing means) 240 shown in FIG. 21, it is possible to narrow the irradiation angle of the stroboscope at the time of stereo photography. Reflective umbrella 242 equipped with arc tube 241 facing strobe light emitting section 34
Has a Fresnel lens 243 integrally on its front part. Between the Fresnel lens 243 and the strobe light emitting section 34 provided on the front wall 21a of the camera body 21, a pair of reflection plates 244 supported so as to be able to advance and retreat in the vertical direction orthogonal to the strobe optical axis SO are provided. It is provided. Stereo adapter attachment detection unit 134 is adapter 100
In the case where the attachment of the light source is not detected, the pair of reflection plates 244 are positioned at the positions retracted from the viewfinder optical axis SO indicated by the chain double-dashed line, that is, the strobe irradiation angle is made to correspond to the standard size shooting screen. When the stereo adapter mounting detection unit 134 detects mounting of the adapter 100, the pair of reflectors 244 are positioned at positions close to the finder optical axis SO indicated by solid lines, and stereo photography is performed. The strobe irradiation angle of can be narrowed.

FIG. 22 shows the internal structure of the adapter 100. The pair of first reflection mirrors 14a and 14b are
It has rotation shafts 183 and 184 whose axes are located on the reflection surfaces of the reflection mirrors 14a and 14b, and is rotatable about these rotation shafts 183 and 184. The first reflection mirrors 14a and 14b also have rotation shafts 183 and 1
The fan-shaped plates 185 and 186 orthogonal to 84 are integrally formed. Gear portions 185a and 186a are respectively formed at the arc-shaped end portions of the fan-shaped plates 185 and 186, and these gear portions 185a and 186a are screwed with each other, whereby a pair of first reflection mirrors 14a,
The reference numeral 14b is configured to be rotatable in a line-symmetrical relationship with respect to the photographing optical axis PO.

A small fan-shaped plate 187 is integrally formed on the fan-shaped plate 185 at a position projecting rearward of the first reflecting mirror 14a. A gear portion 187a is formed at the arcuate end of the small fan plate 187, and the gear portion 187a is fixed to the fixing portion (not shown) of the adapter 100.
The drive pinion 182a of FIG.

The fan-shaped plate 185 also has a fan-shaped plate 188 that rotates integrally with the fan-shaped plate 185 at a position adjacent to the small fan-shaped plate 187. This fan-shaped plate 1
Reference numeral 88 constitutes a known photo interrupter together with the encoder 181, and therefore these fan plates 18 are provided.
8 and the encoder 181, the first reflection mirror 14a,
The rotation amount of 14b, that is, the incident angle of the first reflection mirrors 14a and 14b with respect to the second reflection mirrors 13a and 13b can be detected. Mirror drive motor 182 and encoder 181
Is connected to the mirror motor drive circuit 180 shown in FIG. 2 which is controlled by the control means 120.

The control means 120 controls the first reflecting mirrors 14a and 14b according to the photographing distance and the focal length f of the photographing lens.
Control to rotate. That is, the control means 120
Regarding the focal length f of the taking lens, as shown in FIG. 23, first and second reflection mirrors 14a (14b), 13a
The deviation angle due to (13b) is θ ₁ ; image plane (film plane) F
The distance from the optical axis PO of the taking lens to one end of the taking screen in the lateral direction is y; the first reflecting mirror 14a.
(14b) and a second reflecting mirror angle 13a (13b) forms [psi; when the subject is at _{infinity, ψ = θ 1/2 =} (1/2) tan -1 (y / 2f) ··· The first reflecting mirrors 14a and 14b so as to satisfy the equation
Is rotated (first control).

Further, the control means 120 controls the first reflecting mirror 14a of the subject light from the subject 15 with respect to the photographing distance.
If the distance U to the entrance point I to (14b) is finite, a base length L; distance U declination theta ₂ by; _{When, ψ = θ 2/2 =} (1/2) tan -1 ( L / 2U) ..., so that the first reflection mirrors 14a and 14b are satisfied.
Is rotated (second control).

Therefore, when the distance U is finite, the control means 120 simultaneously performs the above-mentioned first and second controls. That is, ψ = (1/2) [tan ⁻¹ (L / 2U) + tan ⁻¹ (y
/ 2f)] so that the first reflection mirrors 14a and 14b are satisfied.
Rotate. When the distance U is approximately ∞, the control means 12
A value of 0 performs control satisfying only the above equation.

When the reflecting mirror is a fixed type, it can be used only at a specific focal length, and if it is used at a position other than the specific focal length, the position of a pair of subject images projected on one frame of film is changed. However, there is a problem that the film is out of the center of one frame, but according to the adapter 100 of the present invention, by rotating the first reflecting mirrors 14a and 14b, stereo photography at a plurality of focal lengths becomes possible, The position of the subject image does not deviate from the center of the screen due to the change in focal length.

Further, when the reflection mirror is a fixed type,
When the subject distance changes, the incident angle of the subject light with respect to the reflection mirror changes, and the subject image moves on the image plane accordingly, which makes it difficult to stereoscopically view the finished stereo photograph using a known stereo viewer. However, according to the adapter 100 of the present invention, even if the subject distance changes, the incident angle of the subject light with respect to the reflection mirror does not change, so that the subject image does not move on the image plane due to the change of the photographing distance. .

When the adapter 100 is attached to the camera 20, the photographing optical path is extended as compared with the case where the adapter 100 is not attached.
2 is detected, the shooting distance (subject distance) OD (FIG. 24) calculated by the distance measuring unit 122 shown in FIG.
By using the correction distance MD to which the extended optical path length E is added, the AF circuit (not shown) included in the camera 20 is caused to perform focus control. The extended optical path length E
Is E = e1 + e2 + e3-OD. Therefore,
MD becomes MD = OD + E. Note that e1 is a variable, and e1 = U / cosφ.

A normal lens shutter camera equipped with a distance measuring device is an active distance measuring device in which the distance measuring device is provided separately from the taking lens, for example, the light projecting portion and the light receiving portion are provided on the front surface of the camera body. Since it is adopted, the optical path length becomes long when the adapter is attached, and there is a problem that the extended optical path length defocuses. However, according to the above configuration, the adapter 100 is attached to the camera 20 When taking a picture, there is no focus shift due to the extension of the optical path length.

Instead of the focus control by the control means 120, when the adapter 100 is attached to the camera 20, a light receiving element located in front of the infrared light receiving portion 33 or behind the infrared light receiving portion 33 (inside the camera body 21) ( A prism (not shown) as an optical path deflecting means may be located in front of (not shown). As a specific configuration for providing this prism (optical path deflecting member),
For example, by a known means (for example, an engaging groove is formed on the front wall 21a side and an engaging pin that can be fitted into the engaging groove is formed on the prism side) on the front surface of the infrared light receiving portion 33 of the front wall 21a. The prism is detachably installed, and the adapter 10
According to the mounting of 0 on the camera 20, the photographer appropriately mounts and removes the prism by his / her own hand.

As another configuration, when the adapter 100 is mounted on the camera 20, the prism is fixedly provided on the upper surface of the adapter 100 so that the exit surface of the prism is located in front of the infrared ray receiving section 33. May be As another configuration, by using a mechanism similar to the stereo visual field switching mechanism 140 and the stereo visual field scaling mechanism 150 using electromagnets shown in FIGS. 10 and 11, the adapter 100 is mounted by the stereo adapter mounting detector 134. The prism may be advanced or retracted in front of the light receiving element (not shown) inside the camera body 21 in association with the detection of attachment / detachment. Furthermore, instead of using the prism, a lens may be used.

The shooting distance at which a stereoscopic effect is obtained in stereo photography is determined by the base line length L from the center of the first reflecting mirror 14a to the center of the first reflecting mirror 14b shown in FIG. 27, and is about 20 times the base line length L. In order to obtain a stereoscopic effect, it is preferable to position the subject within a distance of about 60 times from the above. From this, in the control means 120 of the present invention, the stereo adapter mounting detection unit 134 is also used.
When it is detected that the camera is mounted, the shooting distance (subject distance) determined by the AF / AE unit 121 (FIG. 2) provided inside the camera 20 is fixed to a predetermined shooting distance OD _p . The predetermined shooting distance OD _p is determined by the length of the base line length L, and is 20 to 60 times the base line length L. Therefore, the control means 120 determines that the baseline length L
If the length is 7 cm, the predetermined shooting distance OD _p is, for example, 14
The AF / AE unit 121 is controlled so as to be fixed at a predetermined shooting distance within the range of 0 cm to 420 cm. As described above, in stereo photography, the photographing range in which a stereoscopic effect is obtained is limited. Therefore, even if the photographing distance is fixed as described above, there is no practical problem.

In the conventional stereophotographing apparatus, although the photographing range in which the stereoscopic effect is obtained is limited, when the camera is equipped with the AF mechanism, the entire range inside and outside the limited photographing range is provided. Although the problem of distance measurement occurs, this problem is solved by the above-described configuration of the present invention. When the adapter 100 is attached, the distance measuring unit 122 detects the shooting distance and the AF / AE unit 121 focuses. The burden of adjustment control is reduced.

When the stereo adapter mounting detector 134 detects mounting of the adapter 100, the control means 120 fixes the aperture value to a predetermined aperture value F _p (for example, F6.7) or the predetermined aperture value F _p. As described above, the AF
-Control the AE unit 121. In stereo photography,
In order to obtain a three-dimensional effect, it is desirable that the focus be in a wide range from a near view to a distant view. When the camera is equipped with an AE mechanism, if the aperture is set to a large aperture, the depth of field becomes shallow, resulting in a stereoscopic image with poor stereoscopic effect. However, according to this configuration of the present invention, a stereo image is obtained. When taking a picture, the depth of field is always deep, so you can get a stereoscopic picture with a stereoscopic effect that is widely focused from the near view to the distant view. This configuration is applicable not only to the lens shutter camera but also to a single lens reflex camera.

Although the camera 20 in the above embodiment is a lens shutter camera, when the adapter 100 is attached to a single-lens reflex camera (not shown), as shown in FIG. 25, left and right images within the viewfinder field V '. Since the boundary of is unclearly recognized (NC in the figure is the part that is unclearly recognized),
In the single-lens reflex camera (not shown) according to the present invention, a field frame 190 is provided at the boundary between the left and right images in the finder field V ′ as shown in FIG. 26 in association with the mounting of the adapter 100 on the single-lens reflex camera. It can be configured. The mounting detection of the adapter 100 of the single-lens reflex camera in this configuration can be performed by using the same detection unit as that of the camera 20 described above. As a specific structure for providing the visual field frame 190, for example, the visual field frame 190 is configured as a liquid crystal display unit provided on a focusing screen (not shown), and when the mounting of the adapter 100 is detected, the liquid crystal When the mounting of the adapter is not detected by energizing the liquid crystal part to make the liquid crystal part non-transparent, the liquid crystal part is made to be transparent and transparent without energizing the liquid crystal part. Is possible.

As another specific structure for providing the visual field frame 190, a visual field formed as a rod-shaped member or the like on a focusing screen (not shown) is interlocked with attachment and detachment of the adapter 100 to and from a single-lens reflex camera. Frame 1
90 may be mechanically advanced and retracted. According to this configuration, when the adapter is attached to the single-lens reflex camera to take a picture, the boundary between the two left and right object images to be observed in the viewfinder field can be clearly recognized.

In a photograph finished by stereo photography, the boundary between two subject images photographed in one frame of film is very unclear. When a photo is printed, typically the entire area of the subject filmed on the film is not printed, and only a narrow area with the edges of this entire area cut. If the printed photograph is printed in either the left-right direction or in the film running direction, the boundary between the two subject images will be displaced from the center of the photograph. If the boundary is clearly visible, the boundary can be appropriately set in a known stereo viewer, and thus it becomes easy to appropriately observe the stereoscopic image. In order to clarify the boundary between the two unclear object images in the related art, for example, a light emitting unit extending in a direction orthogonal to the traveling direction of the film at a position on the film pressure plate corresponding to the position of the boundary. In the case of stereo photography, the light emitting portion is caused to emit light after one frame of film is photographed, and the boundary between two subject images in the one frame of film can be clearly recognized.

As another method, a transparent plate is provided immediately before the film, and the position on the transparent plate corresponding to the boundary position is
A liquid crystal light-shielding portion extending in a direction orthogonal to the running direction of the film is provided so that the liquid crystal light-shielding portion is not energized except in the case of stereo photography, and the liquid crystal light-shielding portion is in a light-transmitting state. By energizing the liquid crystal light-shielding portion during shooting of one frame so that the liquid crystal light-shielding portion is in a non-light-transmitting state, the boundary between two subject images in one frame of the film can be clearly recognized.

In the present embodiment, the size of the photographed screen as the horizontally long size that is switched by the screen size switching mechanism 40 is the panoramic size, but it may be a size other than the so-called high-definition size.

[0080]

As described above, the stereo photography apparatus of the present invention automatically sets various photography conditions and the like necessary for the stereo photography without taking the photographer's hand during the stereo photography. Therefore, even beginner photographers who are not skilled in stereo photography can easily obtain stereoscopic photographs with a stereoscopic effect.

According to the stereo photography apparatus of the present invention,
A field-of-view forming means that is provided in the optical path of the finder and selectively sets either a normal shooting field of view or a stereo shooting field of view,
Based on the detection means for detecting whether or not the stereo adapter is attached to the camera, and the detection result of this detection means,
Since the switching means for switching between the normal photographing field of view and the stereoscopic photographing field of view by the field of view forming means is provided, even when the adapter shutter is attached to the lens shutter camera for photographing, the finder field of view and the actual photographing range are observed. There is no inconvenience that there is a difference between and.

Further, according to the stereo photography apparatus of the present invention, with the stereo adapter attached to the camera, the stereo photography field forming member located in front of the viewfinder provided on the camera is integrally formed with the stereo adapter. Since the configuration is adopted, even when the adapter is attached to the lens shutter camera to take an image, there is no inconvenience that a difference occurs between an observed viewfinder field and an actual imaging range.

Further, according to the stereo photography apparatus of the present invention, the detection means for detecting whether or not the stereo adapter is attached to the camera, and the screen size switching when the detection means detects the attachment of the stereo adapter to the camera. Since it is configured to activate the mechanism to switch the size of the shooting screen to the landscape size, it is a stereo photography that shoots the same subject on the left and right in one film frame, but it gives a realistic stereo image. Obtainable.

According to the stereo photography apparatus of the present invention, the first reflecting member is rotated according to the focal length detected by the focal length detecting means so that the first reflecting member is incident on the second reflecting member. Since the angle is changed, stereo photography can be performed at a plurality of focal lengths, and the position of the subject image does not deviate from the center of the screen due to the change in focal length.

Further, according to the stereo photography apparatus of the present invention, according to the object distance detected by the distance measuring means,
Since the first reflection member is rotated to change the incident angle of the first reflection member with respect to the second reflection member,
Even if the subject distance changes, the incident angle of the subject light with respect to the reflection mirror does not change, and therefore the subject image does not move on the image plane due to the change in the shooting distance.

Further, according to the stereo photography apparatus of the present invention, when the detecting means detects the attachment of the stereo adapter to the lens shutter camera, a predetermined distance is added to the object distance detected by the distance measuring means, Since the photographing lens is focused on the focusing mechanism according to the subject distance added by the predetermined distance, when the adapter is attached to the lens shutter camera, the focus shift due to the extension of the optical path length does not occur. .

According to the stereo photography apparatus of the present invention, when the detecting means detects the attachment of the stereo adapter to the lens shutter camera, the advancing / retreating means is actuated to advance the optical path deflecting member to the front of the light receiving portion of the distance measuring means. With this configuration, when the adapter is attached to the lens shutter camera, focus deviation due to deflection of the optical path length does not occur.

According to the stereo photography apparatus of the present invention, the lens shutter camera measures the object distance by receiving the infrared light projected from the light projecting section toward the object by the light receiving section. Since the stereo adapter has a distance means, and the stereo adapter is integrated with an optical path deflecting member for deflecting the optical path, which is positioned in front of the light receiving portion in a state where the stereo adapter is mounted on the lens shutter camera, the adapter is a lens. When mounted on a shutter camera, no focus shift occurs due to extension of the optical path length.

Further, according to the stereo photography apparatus of the present invention, when the detection means detects the mounting of the stereo adapter on the camera, the photography distance determined by the autofocus mechanism is fixed to a predetermined photography distance. Therefore, it is not necessary to perform focus adjustment by the automatic focusing mechanism during stereo photography, and the burden on the distance measuring means and focus adjustment control is reduced.

Further, according to the stereo photography apparatus of the present invention, when the detecting means detects the mounting of the stereo adapter on the camera, the size of the aperture by the automatic exposure mechanism is set to a predetermined aperture value or less. Therefore, in stereo photography, it is possible to always obtain stereo photography.

[Brief description of drawings]

FIG. 1 is a perspective external view showing a camera and a stereo adapter to which the present invention is applied.

FIG. 2 is a diagram showing a control block of the camera.

FIG. 3 is a perspective view showing a finder optical system and a screen size switching mechanism provided in the same camera.

FIG. 4 is a front view showing a screen size switching mechanism in a state of being switched to a standard size.

FIG. 5 is a front view showing the screen size switching mechanism in a state where the screen size is switched to a panoramic size.

FIG. 6 is a perspective external view of the stereo adapter as seen from the back surface thereof.

FIG. 7 is a plan sectional view showing a connection structure between the stereo adapter and the zoom lens barrel.

FIG. 8 is a view showing a shooting screen by conventional stereo photography in which left and right images are formed as a vertically long screen.

FIG. 9 is a diagram showing a shooting screen by stereo photography in the present invention in which left and right subject images are formed as horizontally long screens.

FIG. 10 is a perspective view showing a stereo visual field switching mechanism.

FIG. 11 is a perspective view showing a stereo visual field varying mechanism.

FIG. 12 is an explanatory diagram showing a state of a viewfinder field.

FIG. 13 is a perspective view showing another embodiment of the stereo visual field varying mechanism.

FIG. 14 is a perspective external view showing a stereo adapter integrally provided with a stereo photographing visual field forming member and a camera to which the stereo adapter is attached.

FIG. 15 is a perspective view showing a finder moving lens driving mechanism.

FIG. 16 is a perspective external view showing a stereo adapter integrally provided with a variable power lens and a camera to which the stereo adapter is attached.

FIG. 17 is a perspective view showing a drive mechanism including a strobe device with a variable irradiation angle.

FIG. 18 is a perspective external view showing a stereo adapter integrally provided with an irradiation angle changing member and a camera to which the stereo adapter is attached.

FIG. 19 is a perspective view showing an embodiment of irradiation angle changing means.

FIG. 20 is a perspective view showing another embodiment of the irradiation angle changing means.

FIG. 21 is an explanatory view showing another embodiment of the irradiation angle changing means.

FIG. 22 is a top view showing the internal structure of the stereo adapter.

FIG. 23 is a diagram for explaining the positional relationship between the first reflection mirror and the second reflection mirror that are rotated according to the shooting distance and the focal length.

FIG. 24 is a diagram for explaining a state where the optical path length is extended by the stereo adapter.

[Fig. 25] Fig. 25 is a diagram showing a state of a viewfinder field in stereo photography using a conventional single-lens reflex camera.

FIG. 26 is a view showing a state of a viewfinder field by stereo photography using the single-lens reflex camera according to the present invention.

FIG. 27 is an explanatory diagram illustrating the principle of a stereo photography apparatus.

[Explanation of symbols]

 13a, 13b Second reflection mirror 14a, 14b First reflection mirror 20 Camera 22 Fixed lens barrel 23 Zoom lens barrel 24 Engaging claw 25 Electrical contact pin 26 Cam ring 40 Screen size switching mechanism 41 Panoramic view frame 60 Finder optical system 100 Stereo Adapter 102 Connector part 103 Light blocking member (stereo photographing visual field forming member) 104 Light blocking part 104a Opening 106 Variable magnification lens 107 Irradiation angle changing member 108 Fresnel lens 110 Engaging claw 111 Mount part 112 Electric contact land 140 Stereo visual field switching mechanism 142 Light blocking Portion (stereo photographing visual field forming member) 142a Aperture 150 Stereo visual field variable magnification mechanism 152 Variable magnification lens 160 Movable variable magnification lens (variable magnification lens) 170 Finder moving lens drive mechanism 181 Encoder 182 Mirror drive model 190 Field of view 200 Drive mechanism 210 Strobe device 212 Arc tube 213 Reflector 220 Irradiation angle changing mechanism (irradiation angle changing means) 221 Fresnel lens 230 Irradiation angle changing mechanism (irradiation angle changing means) 231 Cam plate 232 Switch operating part 240 Irradiation Angle changing mechanism (irradiation angle changing means) 244 Reflector

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[Procedure amendment]

[Submission date] October 24, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 7

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 19

[Correction method] Change

[Correction content]

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 20

[Correction method] Change

[Correction content]

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 21

[Correction method] Change

[Correction content]

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 22

[Correction method] Change

[Correction content]

[Procedure correction 6]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 26

[Correction method] Change

[Correction content]

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

Further, the present invention provides a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one frame of film, and a camera capable of mounting the stereo adapter on the front end of its photographing lens. In the stereo photography apparatus having, the taking lens has a variable focal length, the stereo photography apparatus has a focal length detecting means for detecting the focal length, and the stereo adapter detects the subject light from the same subject. There is a pair of a first reflecting member for reflecting and a second reflecting member for reflecting the subject light reflected by the first reflecting member toward a photographing lens, and the first reflecting member is the one for the second reflecting member. in order to change the incident angle of subject light, said
(1) An incident optical axis that passes through the reflecting surface of the reflecting member and enters the reflecting surface.
And a reflection optical axis from the reflection surface.
And a subject image reflected by the first reflecting member, which is rotatably provided about a vertical axis and rotates the first reflecting member according to the focal length detected by the focal length detecting means.
It is characterized in that it is configured to change the incident angle of body light with respect to the second reflecting member.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

Further, the present invention provides a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one frame of film, and a camera capable of mounting the stereo adapter on the front end of its photographing lens. In the stereo photography apparatus having, a stereo adapter includes a first reflecting member that reflects subject light from the same subject and a second reflection member that reflects the subject light reflected by the first reflecting member toward a taking lens. There is a pair of members, and the first reflecting member is configured to change the incident angle of the subject light with respect to the second reflecting member .
(1) An incident optical axis passing through the reflecting surface of the reflecting member and to the reflecting surface
And a reflection optical axis from the reflection surface.
Provided so as to be rotatable about a pivot shaft, and has a rotational position detecting means for detecting a rotational position of the first reflecting member,
The camera has a distance measuring means for detecting the subject distance, according to the object distance detected by the distance measuring means, is reflected by said first reflecting member is rotated the first reflecting member
It is characterized in that it is configured to change the incident angle of the received subject light with respect to the second reflecting member.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

Further, according to the present invention, a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one film frame, and a lens shutter capable of mounting the stereo adapter on the front end of the photographing lens. In a stereo photography apparatus having a camera, a lens shutter camera includes a distance measuring unit that detects a subject distance; a focusing mechanism that focuses a photographing lens according to the subject distance detected by the distance measuring unit; Means for detecting whether or not the stereo adapter is attached to the lens shutter camera; and when the detection means detects attachment of the stereo adapter to the lens shutter camera, a predetermined distance is added to the subject distance detected by the distance measuring means. summed, shoot by the focusing Organization in response to the predetermined distance the added object distance It is characterized by having; focuses control means lens.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

Further, according to the present invention, a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one film frame, and a lens shutter capable of mounting the stereo adapter on the front end of the photographing lens. In a stereo photography apparatus having a camera, a lens shutter camera has a distance measuring means for detecting a subject distance by receiving infrared light projected from the light projecting portion toward the subject by the light receiving portion; whether the mounting of the stereo adapter to lenses shutter camera; provided so as to be moved in the front light-receiving portion of the distance means, the optical path deflecting unit for deflecting the light path; the optical path deflecting member advancing and retracting the hand stage for advancing and retreating in front the light receiving portion A detection means for detecting, and that the detection means detects that the stereo adapter is attached to the lens shutter camera. , Actuating means for advancing the optical path deflecting member is actuated said moving means in front the light receiving portion; and characterized by having a.

[Procedure Amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

Further, according to the present invention, a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one film frame, and a camera capable of mounting the stereo adapter on the front end of its photographing lens. In a stereo photography apparatus having: a camera, an automatic exposure mechanism; detection means for detecting whether or not a stereo adapter is attached to the camera; and when the detection means detects attachment of the stereo adapter to the camera, It is characterized by including aperture value setting means for setting the size of the aperture by the exposure mechanism to a predetermined F value or more .

[Procedure Amendment 12]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

A release button 38 is provided on one side of the upper part of the camera body 21, and the zooming switch 3 for changing the focal length of the photographing lens is provided behind it.
6 is provided. This zooming switch 36
Wide zoom switch 36 that changes the focal length to the wide-angle side
a and a tele-zoom switch 36b for changing to the telephoto side. A screen size switching mechanism 40 provided in the camera 20 is provided at the center of the upper portion of the camera body 21.
A screen size changeover switch 37 for operating (FIGS. 3 to 5) is provided. The switch 37 is used to slide the left and right sides to change the size of the shooting screen into two sizes, namely
This is an operation switch for switching between the standard size of 24 mm x 36 mm and the so-called panoramic size (horizontal size) of 13 mm x 36 mm.

[Procedure Amendment 13]

[Document name to be amended] Statement

[Name of item to be corrected] 0029

[Correction method] Change

[Correction content]

Further, the screen size regulation plate 42 has a support pin 5 at the intersection of the guide portion 42a and the screen regulation portion 42b.
1 and the screen size regulation plate 43 includes the guide portion 4
A support pin 59 is provided at the lower end of 3a. Rotation support pin 5 fixed to a fixed portion (not shown) of the camera body 21
An interlocking bar 52 is rotatably supported by 3, and a long hole 52a at one end and a long hole 52b at the other end of the interlocking bar 52 are fitted in the support pins 51 and 52, respectively. A coil spring 54 is wound around the rotation support pin 53. One end of the coil spring 54 is attached to an engagement pin 55 which is planted in a fixed portion (not shown) of the camera body 21, and the other. The end portion is engaged with an engagement pin 56 that is planted in the interlocking bar 52. As a result, the interlocking bar 52 always receives a rotational biasing force in the clockwise direction of FIG. 4 about the rotational support pin 53, and in its free state, the upper end of the linear guide groove 42c abuts the guide pin 49a. Then, the linear guide groove 43c is rotated until the lower end portion of the linear guide groove 43c is brought into contact with the guide pin 50b. In addition, the interlocking bar 52 and the rotation support pin 53
Is configured so that the vertical movement of the screen size regulation plate 42 can be transmitted to the screen size regulation plate 43 as the same vertical movement amount in the opposite direction with respect to the center line BB. .

[Procedure Amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction content]

The camera 20 has a stereo visual field switching mechanism 140 shown in FIG. This stereo visual field switching mechanism 140 is provided in the camera body 21 in the vicinity of the finder optical system 60, and has a stereo visual field plate 141 positioned adjacent to the panoramic visual field frame 41 and parallel to the panoramic visual field frame 41. is doing. The stereo view switching mechanism 140 is not shown in FIG.

[Procedure Amendment 15]

[Document name to be amended] Statement

[Correction target item name] 0041

[Correction method] Change

[Correction content]

The camera 20 also has a stereo visual field varying mechanism 150 shown in FIG. Like the stereo visual field switching mechanism 140, the stereo visual field changing mechanism 150 is provided in the camera body 21 in the vicinity of the finder optical system 60 and moves back and forth in the finder optical path between the visual field frame 64 and the eyepiece 65. The zoom lens 152 has a variable power lens 152. It should be noted that this stereo visual field varying mechanism 150 is shown in FIG.
Not shown in FIG.

[Procedure Amendment 16]

[Document name to be amended] Statement

[Correction target item name] 0042

[Correction method] Change

[Correction content]

The zoom lens 152 is a so-called magnification lens for enlarging the finder field AV shown in FIG. 12 to a size of the finder field V for observation, and the lens frame 1
It is supported by 53. This lens frame 153 is
It is fixed to a driven plate 151 that can move in the vertical direction. The driven plate 151 has a pair of linear guide grooves 154 formed in the vertical direction, and is fixed to a fixed portion (not shown) of the camera body 21 fitted in the linear guide grooves 154. The guide pin 155 supports the linear guide groove 154 so as to be vertically movable within the range of the length thereof. The engaging portion 156 of one side of the driven plates 151, the tension spring 157 are hooked between the fixed part engaging pin 158 planted on the (not shown) of the camera body 21, which Thus, the driven plate 151 is always urged downward by the action of the tension spring 157.

[Procedure Amendment 17]

[Document name to be amended] Statement

[Name of item to be corrected] 0058

[Correction method] Change

[Correction content]

Also, using the irradiation angle changing mechanism (irradiation angle changing means) 230 shown in FIG. 20, the irradiation angle of the strobe during stereo photography is narrowed so as to correspond to the shooting angle of view during stereo photography. be able to. The irradiation angle changing mechanism 230 includes a cam plate 2 supported so as to be movable in a direction orthogonal to the strobe optical axis SO (direction of arrow T in the drawing).
Has 31. The cam plate 231 has a switch operating section 232 exposed to the outside of the camera body 21, and is moved in the arrow T direction by a slide operation of the switch operating section 232 by the photographer. The cam plate 231 also has a cam groove 233 formed in a predetermined shape. The cam groove 233 is supported in the cam groove 233 so as to be movable in the front-rear direction along the strobe optical axis SO and has an arc tube 236 . A cam pin 235 formed on the reflector 234 is fitted therein. A convex Fresnel lens (not shown) for condensing the light from the arc tube 236 is provided between the strobe light emitting section 34 and the reflector 234.
It is fixedly provided to the fixing part (not shown). With the above configuration, when the shooting screen is not the standard size stereo photo shooting, the switch operation unit 232 is positioned on the T2 side in the drawing, that is, the flash irradiation angle is the standard size shooting. When a stereoscopic image is taken in which the screen is made to correspond to the screen (normal state) and the shooting screen has a panoramic size, the switch operation unit 232 is used.
Is located on the T1 side in the drawing, and the reflector 234 is attached to the cam groove 23.
It is moved back along the profile of No. 3 to make the irradiation angle of the strobe correspond to the photographing screen of stereo photography (stereo state). The irradiation angle of the strobe in this stereo state is about 1 of the irradiation angle in the normal state.
It is preferably set to / 2. Therefore, the cam groove 233
The shape is set such that when the switch operating portion 232 is located on the T1 side in the figure, the irradiation angle of the strobe is about 1/2 of the irradiation angle in the normal state. In addition to the above configuration, if the configuration is such that the stereo photography mode is switched in conjunction with the operation of the switch operation unit 232.
The irradiation angle of the strobe in the stereo photography mode is always about 1/2 of the irradiation angle in the normal state. Therefore, also with this configuration, the stroboscopic light can be effectively used, and the guide number at the time of stereoscopic photography can be substantially increased.

[Procedure 18]

[Document name to be amended] Statement

[Correction target item name] 0060

[Correction method] Change

[Correction content]

FIG. 22 shows the internal structure of the adapter 100. The pair of first reflection mirrors 14a and 14b are
It has rotating shafts 183 and 184 whose axes are parallel to each other and are located on the reflecting surfaces of the reflecting mirrors 14a and 14b, and are rotatable about these rotating shafts 183 and 184. The rotating shafts 183 and 184 are first reflection mirrors.
A plane including the optical axes before and after reflection at 14a and 14b (see FIG. 22).
(A plane that coincides with the plane of the paper). The first reflection mirrors 14a and 14b also have rotation shafts 183 and 18
4 and the fan-shaped plates 185 and 186 which are orthogonal to each other are integrally formed. Gear portions 185a and 186a are respectively formed on the arc-shaped end portions of the fan-shaped plates 185 and 186, and these gear portions 185a and 186a are screwed with each other, whereby the pair of first reflection mirrors 14a and 1a.
4b is configured to be rotatable in a line-symmetrical relationship with respect to the photographing optical axis PO.

[Procedure Amendment 19]

[Document name to be amended] Statement

[Name of item to be corrected] 0072

[Correction method] Change

[Correction content]

The shooting distance at which a stereoscopic effect is obtained by stereo photography is determined by the base line length L from the center of the first reflecting mirror 14a to the center of the first reflecting mirror 14b shown in FIG. 23, and is about 20 times the base line length L. In order to obtain a stereoscopic effect, it is preferable to position the subject within a distance of about 60 times from the above. From this, in the control means 120 of the present invention, the stereo adapter mounting detection unit 134 is also used.
When it is detected that the camera is mounted, the shooting distance (subject distance) determined by the AF / AE unit 121 (FIG. 2) provided inside the camera 20 is fixed to a predetermined shooting distance OD _p . The predetermined shooting distance OD _p is determined by the length of the base line length L, and is 20 to 60 times the base line length L. Therefore, the control means 120 determines that the baseline length L
If the length is 7 cm, the predetermined shooting distance OD _p is, for example, 14
The AF / AE unit 121 is controlled so as to be fixed at a predetermined shooting distance within the range of 0 cm to 420 cm. As described above, in stereo photography, the photographing range in which a stereoscopic effect is obtained is limited. Therefore, even if the photographing distance is fixed as described above, there is no practical problem.

[Procedure amendment 20]

[Document name to be amended] Statement

[Correction target item name] 0084

[Correction method] Change

[Correction content]

[0084] According to the stereo photographing apparatus of the present invention, according to the focal length detected by the focal length detection unit, a first reflecting member is rotated counterclockwise by said first reflecting member
Since it is configured to change the incident angle of the projected subject light with respect to the second reflecting member, it is possible to take a stereo photograph at a plurality of focal lengths, and the position of the subject image deviates from the center of the screen due to the change of the focal length. There is no end.

[Procedure correction 21]

[Document name to be amended] Statement

[Correction target item name] 0085

[Correction method] Change

[Correction content]

Further, according to the stereo photography apparatus of the present invention, according to the object distance detected by the distance measuring means,
The first reflecting member is rotated to be reflected by the first reflecting member.
Since the incident angle of the reflected subject light with respect to the second reflecting member is changed, even if the subject distance changes, the incident angle of the subject light with respect to the reflection mirror does not change. The subject image does not move on the surface.

[Procedure correction 22]

[Document name to be amended] Statement

[Correction target item name] 0086

[Correction method] Change

[Correction content]

Further, according to the stereo photography apparatus of the present invention, when the detecting means detects the attachment of the stereo adapter to the lens shutter camera, a predetermined distance is added to the object distance detected by the distance measuring means, since the focuses constituting the shadow lens shooting by focusing Organization in response to the predetermined distance the added object distance, in the case of mounting the adapter to the lens shutter camera, causing the focal shift due to extension of the optical path length There is no.

[Procedure amendment 23]

[Document name to be amended] Statement

[Correction target item name] 0090

[Correction method] Change

[Correction content]

Further, according to the stereo photography apparatus of the present invention, when the detecting means detects the mounting of the stereo adapter on the camera, the size of the aperture by the automatic exposure mechanism is set to a predetermined F value or more . Therefore, in stereo photography, it is possible to always obtain stereo photography.

[Procedure correction 24]

[Document name to be amended] Statement

[Correction target item name] Explanation of code

[Correction method] Change

[Correction content]

[Explanation of reference numerals] 13a, 13b Second reflecting mirror 14a, 14b First reflecting mirror 20 Camera 22 Fixed lens barrel 23 Zoom lens barrel 24 Engaging claw 25 Electrical contact pin 26 Cam ring 40 Screen size switching mechanism 41 Panoramic view frame 60 Finder optical system 100 Stereo adapter 102 Connector section 103 Light blocking member (stereo image forming field forming member) 104 Light blocking plate section 104a Opening 106 Variable magnification lens 107 Irradiation angle changing member 108 Fresnel lens 110 Engaging claw 111 Mounting section 112 Electrical contact land 140 Stereo field switching mechanism 142 light-shielding part (stereo imaging field forming member) 142a opening 150 stereo viewing zooming mechanism 152 variator lens 160 electromagnet 161 movable lens (variator lens) 170 finder moving lens driving mechanism 181 et Coder 182 Mirror drive motor 190 Field of view frame 200 Drive mechanism 210 Strobe device 212 Arc tube 213 Reflective umbrella 220 Irradiation angle changing mechanism (irradiation angle changing means) 221 Fresnel lens 230 Irradiation angle changing mechanism (irradiation angle changing means) 231 Cam plate 232 Switch Operation part 240 Irradiation angle changing mechanism (irradiation angle changing means) 244 Reflector

[Procedure correction 25]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

[Procedure Amendment 26]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

[Procedure Amendment 27]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 4

[Correction method] Change

[Correction content]

[Figure 4]

[Procedure correction 28]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 5

[Correction method] Change

[Correction content]

[Figure 5]

[Procedure correction 29]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 14

[Correction method] Change

[Correction content]

FIG. 14

[Procedure amendment 30]

[Document name to be corrected] Drawing

[Correction target item name] Fig. 16

[Correction method] Change

[Correction content]

FIG. 16

[Procedure correction 31]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 17

[Correction method] Change

[Correction content]

FIG. 17

[Procedure correction 32]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 18

[Correction method] Change

[Correction content]

FIG. 18

[Procedure amendment 33]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 20

[Correction method] Change

[Correction content]

FIG. 18 ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] October 26, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 7

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 19

[Correction method] Change

[Correction content]

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 20

[Correction method] Change

[Correction content]

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 21

[Correction method] Change

[Correction content]

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 22

[Correction method] Change

[Correction content]

[Procedure correction 6]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 26

[Correction method] Change

[Correction content]

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

Further, the present invention provides a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one frame of film, and a camera capable of mounting the stereo adapter on the front end of its photographing lens. In the stereo photography apparatus having, the taking lens has a variable focal length, the stereo photography apparatus has a focal length detecting means for detecting the focal length, and the stereo adapter detects the subject light from the same subject. There is a pair of a first reflecting member for reflecting and a second reflecting member for reflecting the subject light reflected by the first reflecting member toward a photographing lens, and the first reflecting member is the one for the second reflecting member. in order to change the incident angle of subject light, said
(1) An incident optical axis passing through the reflecting surface of the reflecting member and to the reflecting surface
And a reflection optical axis from the reflection surface.
And a subject image reflected by the first reflecting member, which is rotatably provided about a vertical axis and rotates the first reflecting member according to the focal length detected by the focal length detecting means.
It is characterized in that it is configured to change the incident angle of body light with respect to the second reflecting member.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

Further, the present invention provides a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one frame of film, and a camera capable of mounting the stereo adapter on the front end of its photographing lens. In the stereo photography apparatus having, a stereo adapter includes a first reflecting member that reflects subject light from the same subject and a second reflection member that reflects the subject light reflected by the first reflecting member toward a taking lens. There is a pair of members, and the first reflecting member is configured to change the incident angle of the subject light with respect to the second reflecting member .
(1) An incident optical axis passing through the reflecting surface of the reflecting member and to the reflecting surface
And a reflection optical axis from the reflection surface.
Provided so as to be rotatable about a pivot shaft, and has a rotational position detecting means for detecting a rotational position of the first reflecting member,
The camera has a distance measuring means for detecting the subject distance, according to the object distance detected by the distance measuring means, is reflected by said first reflecting member is rotated the first reflecting member
It is characterized in that it is configured to change the incident angle of the received subject light with respect to the second reflecting member.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

Further, according to the present invention, a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one film frame, and a lens shutter capable of mounting the stereo adapter on the front end of the photographing lens. In a stereo photography apparatus having a camera, a lens shutter camera includes a distance measuring unit that detects a subject distance; a focusing mechanism that focuses a photographing lens according to the subject distance detected by the distance measuring unit; Means for detecting whether or not the stereo adapter is attached to the lens shutter camera; and when the detection means detects attachment of the stereo adapter to the lens shutter camera, a predetermined distance is added to the subject distance detected by the distance measuring means. summed, shoot by the focusing Organization in response to the predetermined distance the added object distance It is characterized by having; focuses control means lens.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

Further, according to the present invention, a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one film frame, and a lens shutter capable of mounting the stereo adapter on the front end of the photographing lens. In a stereo photography apparatus having a camera, a lens shutter camera has a distance measuring means for detecting a subject distance by receiving infrared light projected from the light projecting portion toward the subject by the light receiving portion; whether the mounting of the stereo adapter to lenses shutter camera; provided so as to be moved in the front light-receiving portion of the distance means, the optical path deflecting unit for deflecting the light path; the optical path deflecting member advancing and retracting the hand stage for advancing and retreating in front the light receiving portion A detection means for detecting, and that the detection means detects that the stereo adapter is attached to the lens shutter camera. , Actuating means for advancing the optical path deflecting member is actuated said moving means in front the light receiving portion; and characterized by having a.

[Procedure Amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

Further, according to the present invention, a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one film frame, and a camera capable of mounting the stereo adapter on the front end of its photographing lens. In a stereo photography apparatus having: a camera, an automatic exposure mechanism; detection means for detecting whether or not a stereo adapter is attached to the camera; and when the detection means detects attachment of the stereo adapter to the camera, It is characterized by including aperture value setting means for setting the size of the aperture by the exposure mechanism to a predetermined F value or more .

[Procedure Amendment 12]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

A release button 38 is provided on one side of the upper part of the camera body 21, and the zooming switch 3 for changing the focal length of the photographing lens is provided behind it.
6 is provided. This zooming switch 36
Wide zoom switch 36 that changes the focal length to the wide-angle side
a and a tele-zoom switch 36b for changing to the telephoto side. A screen size switching mechanism 40 provided in the camera 20 is provided at the center of the upper portion of the camera body 21.
A screen size changeover switch 37 for operating (FIGS. 3 to 5) is provided. The switch 37 is used to slide the left and right sides to change the size of the shooting screen into two sizes, namely
This is an operation switch for switching between the standard size of 24 mm x 36 mm and the so-called panoramic size (horizontal size) of 13 mm x 36 mm.

[Procedure Amendment 13]

[Document name to be amended] Statement

[Name of item to be corrected] 0029

[Correction method] Change

[Correction content]

Further, the screen size regulation plate 42 has a support pin 5 at the intersection of the guide portion 42a and the screen regulation portion 42b.
1 and the screen size regulation plate 43 includes the guide portion 4
A support pin 59 is provided at the lower end of 3a. Rotation support pin 5 fixed to a fixed portion (not shown) of the camera body 21
An interlocking bar 52 is rotatably supported by 3, and a long hole 52a at one end and a long hole 52b at the other end of the interlocking bar 52 are fitted in the support pins 51 and 52, respectively. A coil spring 54 is wound around the rotation support pin 53. One end of the coil spring 54 is attached to an engagement pin 55 which is planted in a fixed portion (not shown) of the camera body 21, and the other. The end portion is engaged with an engagement pin 56 that is planted in the interlocking bar 52. As a result, the interlocking bar 52 always receives a rotational biasing force in the clockwise direction of FIG. 4 about the rotational support pin 53, and in its free state, the upper end of the linear guide groove 42c abuts the guide pin 49a. Then, the linear guide groove 43c is rotated until the lower end portion of the linear guide groove 43c is brought into contact with the guide pin 50b. In addition, the interlocking bar 52 and the rotation support pin 53
Is configured so that the vertical movement of the screen size regulation plate 42 can be transmitted to the screen size regulation plate 43 as the same vertical movement amount in the opposite direction with respect to the center line BB. .

[Procedure Amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction content]

The camera 20 has a stereo visual field switching mechanism 140 shown in FIG. This stereo visual field switching mechanism 140 is provided in the camera body 21 in the vicinity of the finder optical system 60, and has a stereo visual field plate 141 positioned adjacent to the panoramic visual field frame 41 and parallel to the panoramic visual field frame 41. is doing. The stereo view switching mechanism 140 is not shown in FIG.

[Procedure Amendment 15]

[Document name to be amended] Statement

[Correction target item name] 0041

[Correction method] Change

[Correction content]

The camera 20 also has a stereo visual field varying mechanism 150 shown in FIG. Like the stereo visual field switching mechanism 140, the stereo visual field changing mechanism 150 is provided in the camera body 21 in the vicinity of the finder optical system 60 and moves back and forth in the finder optical path between the visual field frame 64 and the eyepiece 65. The zoom lens 152 has a variable power lens 152. It should be noted that this stereo visual field varying mechanism 150 is shown in FIG.
Not shown in FIG.

[Procedure Amendment 16]

[Document name to be amended] Statement

[Correction target item name] 0042

[Correction method] Change

[Correction content]

The zoom lens 152 is a so-called magnification lens for enlarging the finder field AV shown in FIG. 12 to a size of the finder field V for observation, and the lens frame 1
It is supported by 53. This lens frame 153 is
It is fixed to a driven plate 151 that can move in the vertical direction. The driven plate 151 has a pair of linear guide grooves 154 formed in the vertical direction, and is fixed to a fixed portion (not shown) of the camera body 21 fitted in the linear guide grooves 154. The guide pin 155 supports the linear guide groove 154 so as to be vertically movable within the range of the length thereof. The engaging portion 156 of one side of the driven plates 151, the tension spring 157 are hooked between the fixed part engaging pin 158 planted on the (not shown) of the camera body 21, which Thus, the driven plate 151 is always urged downward by the action of the tension spring 157.

[Procedure Amendment 17]

[Document name to be amended] Statement

[Name of item to be corrected] 0058

[Correction method] Change

[Correction content]

Also, using the irradiation angle changing mechanism (irradiation angle changing means) 230 shown in FIG. 20, the irradiation angle of the strobe during stereo photography is narrowed so as to correspond to the shooting angle of view during stereo photography. be able to. The irradiation angle changing mechanism 230 includes a cam plate 2 supported so as to be movable in a direction orthogonal to the strobe optical axis SO (direction of arrow T in the drawing).
Has 31. The cam plate 231 has a switch operating section 232 exposed to the outside of the camera body 21, and is moved in the arrow T direction by a slide operation of the switch operating section 232 by the photographer. The cam plate 231 also has a cam groove 233 formed in a predetermined shape. The cam groove 233 is supported in the cam groove 233 so as to be movable in the front-rear direction along the strobe optical axis SO and has an arc tube 236 . A cam pin 235 formed on the reflector 234 is fitted therein. A convex Fresnel lens (not shown) for condensing the light from the arc tube 236 is provided between the strobe light emitting section 34 and the reflector 234.
It is fixedly provided to the fixing part (not shown). With the above configuration, when the shooting screen is not the standard size stereo photo shooting, the switch operation unit 232 is positioned on the T2 side in the drawing, that is, the flash irradiation angle is the standard size shooting. When a stereoscopic image is taken in which the screen is made to correspond to the screen (normal state) and the shooting screen has a panoramic size, the switch operation unit 232 is used.
Is located on the T1 side in the drawing, and the reflector 234 is attached to the cam groove 23.
It is moved back along the profile of No. 3 to make the irradiation angle of the strobe correspond to the photographing screen of stereo photography (stereo state). The irradiation angle of the strobe in this stereo state is about 1 of the irradiation angle in the normal state.
It is preferably set to / 2. Therefore, the cam groove 233
The shape is set such that when the switch operating portion 232 is located on the T1 side in the figure, the irradiation angle of the strobe is about 1/2 of the irradiation angle in the normal state. In addition to the above configuration, if the configuration is such that the stereo photography mode is switched in conjunction with the operation of the switch operation unit 232.
The irradiation angle of the strobe in the stereo photography mode is always about 1/2 of the irradiation angle in the normal state. Therefore, also with this configuration, the stroboscopic light can be effectively used, and the guide number at the time of stereoscopic photography can be substantially increased.

[Procedure 18]

[Document name to be amended] Statement

[Correction target item name] 0060

[Correction method] Change

[Correction content]

FIG. 22 shows the internal structure of the adapter 100. The pair of first reflection mirrors 14a and 14b are
It has rotating shafts 183 and 184 whose axes are parallel to each other and are located on the reflecting surfaces of the reflecting mirrors 14a and 14b, and are rotatable about these rotating shafts 183 and 184. The rotating shafts 183 and 184 are first reflection mirrors.
A plane including the optical axes before and after reflection at 14a and 14b (see FIG. 22).
(A plane that coincides with the plane of the paper). The first reflection mirrors 14a and 14b also have rotation shafts 183 and 18
4 and the fan-shaped plates 185 and 186 which are orthogonal to each other are integrally formed. Gear portions 185a and 186a are respectively formed on the arc-shaped end portions of the fan-shaped plates 185 and 186, and these gear portions 185a and 186a are screwed with each other, whereby the pair of first reflection mirrors 14a and 1a.
4b is configured to be rotatable in a line-symmetrical relationship with respect to the photographing optical axis PO.

[Procedure Amendment 19]

[Document name to be amended] Statement

[Name of item to be corrected] 0072

[Correction method] Change

[Correction content]

The shooting distance at which a stereoscopic effect is obtained by stereo photography is determined by the base line length L from the center of the first reflecting mirror 14a to the center of the first reflecting mirror 14b shown in FIG. 23, and is about 20 times the base line length L. In order to obtain a stereoscopic effect, it is preferable to position the subject within a distance of about 60 times from the above. From this, in the control means 120 of the present invention, the stereo adapter mounting detection unit 134 is also used.
When it is detected that the camera is mounted, the shooting distance (subject distance) determined by the AF / AE unit 121 (FIG. 2) provided inside the camera 20 is fixed to a predetermined shooting distance OD _p . The predetermined shooting distance OD _p is determined by the length of the base line length L, and is 20 to 60 times the base line length L. Therefore, the control means 120 determines that the baseline length L
If the length is 7 cm, the predetermined shooting distance OD _p is, for example, 14
The AF / AE unit 121 is controlled so as to be fixed at a predetermined shooting distance within the range of 0 cm to 420 cm. As described above, in stereo photography, the photographing range in which a stereoscopic effect is obtained is limited. Therefore, even if the photographing distance is fixed as described above, there is no practical problem.

[Procedure amendment 20]

[Document name to be amended] Statement

[Correction target item name] 0084

[Correction method] Change

[Correction content]

[0084] According to the stereo photographing apparatus of the present invention, according to the focal length detected by the focal length detection unit, a first reflecting member is rotated counterclockwise by said first reflecting member
Since it is configured to change the incident angle of the projected subject light with respect to the second reflecting member, it is possible to take a stereo photograph at a plurality of focal lengths, and the position of the subject image deviates from the center of the screen due to the change in focal length. There is no end.

[Procedure correction 21]

[Document name to be amended] Statement

[Correction target item name] 0085

[Correction method] Change

[Correction content]

Further, according to the stereo photography apparatus of the present invention, according to the object distance detected by the distance measuring means,
The first reflecting member is rotated to be reflected by the first reflecting member.
Since the incident angle of the reflected subject light with respect to the second reflection member is changed, the incident angle of the subject light with respect to the reflection mirror does not change even when the subject distance changes, and therefore the image is changed by the change of the shooting distance. The subject image does not move on the surface.

[Procedure correction 22]

[Document name to be amended] Statement

[Correction target item name] 0086

[Correction method] Change

[Correction content]

Further, according to the stereo photography apparatus of the present invention, when the detecting means detects the attachment of the stereo adapter to the lens shutter camera, a predetermined distance is added to the object distance detected by the distance measuring means, since the focuses constituting the shadow lens shooting by focusing Organization in response to the predetermined distance the added object distance, in the case of mounting the adapter to the lens shutter camera, causing the focal shift due to extension of the optical path length There is no.

[Procedure amendment 23]

[Document name to be amended] Statement

[Correction target item name] 0090

[Correction method] Change

[Correction content]

Further, according to the stereo photography apparatus of the present invention, when the detecting means detects the mounting of the stereo adapter on the camera, the size of the aperture by the automatic exposure mechanism is set to a predetermined F value or more . Therefore, in stereo photography, it is possible to always obtain stereo photography.

[Procedure correction 24]

[Document name to be amended] Statement

[Correction target item name] Explanation of code

[Correction method] Change

[Correction content]

[Explanation of Codes] 13a, 13b Second reflection mirror 14a, 14b First reflection mirror 20 Camera 22 Fixed lens barrel 23 Zoom lens barrel 24 Engaging claw 25 Electrical contact pin 26 Cam ring 40 Screen size switching mechanism 41 Panoramic view frame 60 Finder optical system 100 Stereo adapter 102 Connector section 103 Light blocking member (stereo image forming field forming member) 104 Light blocking plate section 104a Opening 106 Variable magnification lens 107 Irradiation angle changing member 108 Fresnel lens 110 Engaging claw 111 Mounting section 112 Electrical contact land 140 Stereo field switching mechanism 142 light-shielding part (stereo imaging field forming member) 142a opening 150 stereo viewing zooming mechanism 152 variator lens 160 electromagnet 161 movable lens (variator lens) 170 finder moving lens driving mechanism 181 et Coder 182 Mirror drive motor 190 Field of view frame 200 Drive mechanism 210 Strobe device 212 Arc tube 213 Reflective umbrella 220 Irradiation angle changing mechanism (irradiation angle changing means) 221 Fresnel lens 230 Irradiation angle changing mechanism (irradiation angle changing means) 231 Cam plate 232 Switch Operation part 240 Irradiation angle changing mechanism (irradiation angle changing means) 244 Reflector

[Procedure correction 25]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

[Procedure Amendment 26]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

[Procedure Amendment 27]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 4

[Correction method] Change

[Correction content]

[Figure 4]

[Procedure correction 28]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 5

[Correction method] Change

[Correction content]

[Figure 5]

[Procedure correction 29]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 14

[Correction method] Change

[Correction content]

FIG. 14

[Procedure amendment 30]

[Document name to be corrected] Drawing

[Correction target item name] Fig. 16

[Correction method] Change

[Correction content]

FIG. 16

[Procedure correction 31]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 17

[Correction method] Change

[Correction content]

FIG. 17

[Procedure correction 32]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 18

[Correction method] Change

[Correction content]

FIG. 18

[Procedure amendment 33]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 20

[Correction method] Change

[Correction content]

FIG. 20

Claims (26)

[Claims] 1. The same subject viewed from different viewpoints
In a stereo photography device that has a stereo adapter for shooting two images adjacent to one frame of film, and a camera that can attach this stereo adapter to the front end of the shooting lens Field-of-view forming means for selectively setting one of the field of view and the stereoscopic field of view; detecting means for detecting whether or not the stereo adapter is attached to the camera; and the field-of-view forming means based on the detection result of this detecting means. A stereo photography apparatus having a switching means for switching between a normal shooting field of view and a stereo shooting field of view. 2. The visual field forming means according to claim 1, comprising a stereoscopic photographing visual field forming member which is movable in and out of the viewfinder optical path, and an advancing and retracting means which advances and retracts the stereoscopic photographing visual field forming member in the viewfinder optical path. The switching means is an operation means for activating the advancing / retreating means to advance the stereoscopic photographic field forming member into the finder optical path when the detecting means detects attachment of the stereo adapter to the camera. . 3. The zoom lens according to claim 2, wherein the camera is a variable magnification lens which is provided in a viewfinder optical path on the eye side of the stereoscopic photographing field forming member so as to advance and retreat, and which increases the magnification of the viewfinder; Magnification lens advancing / retreating means for advancing / retreating inward; and operation for advancing the varifocal lens into the finder optical axis when the detecting means detects attachment of the stereo adapter to the camera. A stereo photography device having means. 4. The zooming mechanism according to claim 2, wherein the camera is provided in a viewfinder optical path on the eye side of the stereoscopic imaging field forming member and is movable along the viewfinder optical axis to change the magnification of the viewfinder. A lens; a zoom lens moving means for moving the zoom lens along the optical axis of the finder; and, when the detecting means detects mounting of the stereo adapter on the camera, the zoom lens moving means is operated to operate the zoom lens. A stereo photography apparatus having an actuating means for moving a doubling lens along the finder optical axis in order to increase the magnification of the finder. 5. The same subject viewed from different viewpoints
In a stereo photography apparatus having a stereo adapter for projecting two images adjacent to one frame of film and a camera capable of mounting the stereo adapter at the front end of the photographing lens, the stereo adapter is A stereoscopic photography device characterized by integrally having a stereoscopic vision field forming member located in front of a finder provided on a camera when mounted on the camera. 6. The same subject viewed from different viewpoints
Stereo adapter for projecting two images adjacent to one frame of film; this stereo adapter can be attached to the front end of the shooting lens, and the size of the shooting screen is standard size A camera provided with a screen size switching mechanism capable of selectively switching between horizontally long sizes having different ratios; and a detection means for detecting whether or not a stereo adapter is attached to the camera; A stereophotographing apparatus comprising: an actuating unit that actuates a screen size switching mechanism to switch the size of a shooting screen to a landscape size when the detection unit detects that the stereo adapter is attached to the camera. 7. The lens shutter camera with a built-in zoom lens according to claim 6, wherein the finder is a zoom finder that zooms in synchronism with zooming of the taking lens, and a control for controlling the zoom finder. A means for stereo photography, wherein when the detection means detects the attachment of the stereo adapter to the lens shutter camera, the focal length of the objective lens of the zoom finder is set to be larger than that when the detection is not performed. 8. The zoom finder control means according to claim 7, wherein when the detection means detects the attachment of the stereo adapter to the lens shutter camera, the zoom finder control means sets the focal length of the objective lens of the zoom finder to be smaller than that at the time of non-detection. A stereo photography device that is set to double. 9. The zoom lens according to claim 6, wherein the zoom lens is provided in the viewfinder optical path closer to the object side than the viewfinder field frame and is capable of moving forward and backward to increase the magnification of the viewfinder. A zoom lens advancing / retreating means; and an actuating means for actuating the zooming lens advancing / retreating means to advance the zooming lens into the finder optical path when the detecting means detects mounting of the stereo adapter on the camera. Photography equipment. 10. The stereo photography apparatus according to claim 9, wherein the variable power lens is a variable power lens that doubles the focal length of the objective lens of the viewfinder. 11. The variable magnification lens according to claim 6, wherein the camera is located in a finder optical path on the object side of the finder field frame and is movable along the finder optical axis. A zoom lens moving means for moving the zoom lens along the optical axis of the finder; and a zoom lens advancing / retreating means for actuating the zoom lens advancing / retreating means when the detecting means detects attachment of the stereo adapter to the camera. A stereoscopic photography device having an operating means for moving the finder along the optical axis of the finder to increase the magnification of the finder. 12. The stereo photography apparatus according to claim 11, wherein the actuating means moves the variable power lens to double the focal length of the objective lens of the finder. 13. The stereo adapter according to claim 6, further comprising a variable power lens, which is located in front of a viewfinder provided on the camera and which increases a magnification of the viewfinder, with the stereo adapter mounted on the camera. , Stereo photography equipment. 14. The stereo photography apparatus according to claim 13, wherein the magnification of the variable power lens is 2 times. 15. The camera according to claim 1, wherein the camera has a strobe device, and the stereo adapter is provided in the camera with the stereo adapter attached to the camera. A stereo photography device, which is located in front of a light emitting portion of a strobe device and integrally has an irradiation angle changing member for narrowing the irradiation angle of the strobe device. 16. The camera according to claim 1, further comprising a strobe device and an irradiation angle changing means for changing an irradiation angle of the strobe device, wherein the detecting means mounts a stereo adapter on the camera. A stereo photography apparatus that narrows the irradiation angle of the strobe device by using the irradiation angle changing means when detected. 17. The camera according to claim 6, wherein the camera has a strobe device, and the stereo adapter is located in front of a light emitting part of the strobe device provided in the camera with the stereo adapter attached to the camera. Moreover, the irradiation angle of the strobe device is 1/2 compared to the state where the stereo adapter is not attached.
A stereo photography device having a double irradiation angle changing member integrally. 18. The camera according to claim 6, further comprising a strobe device and an irradiation angle changing means for changing an irradiation angle of the strobe device, and the detecting means detects mounting of the stereo adapter on the camera. At this time, a stereo photography apparatus which uses the irradiation angle changing means to make the irradiation angle of the strobe device 1/2 times as compared with a state in which a stereo adapter is not attached. 19. A stereo having a stereo adapter for imprinting two images of the same subject viewed from different viewpoints adjacent to one frame of film, and a camera capable of mounting the stereo adapter on the front end of its photographing lens. In the photographic device, the photographic lens has a variable focal length and has a focal length detecting means for detecting the focal length, and the stereo adapter includes a first reflecting member for reflecting the subject light from the same subject and the first reflecting member. A pair of second reflecting members that reflect the subject light reflected by the one reflecting member toward the photographing lens are provided, and the first reflecting member changes the incident angle of the subject light with respect to the second reflecting member. The focus detection unit is rotatably provided about an axis extending in a direction orthogonal to the optical axis of the photographing lens, Distances depending on the stereo photographing apparatus characterized by being configured to change the incident angle with respect to the second reflecting member is rotated the first reflecting member said first reflecting member. 20. A stereo having a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one frame of film, and a camera capable of mounting the stereo adapter on the front end of its photographing lens. In the photography device, the stereo adapter includes a pair of a first reflecting member that reflects the subject light from the same subject and a second reflecting member that reflects the subject light reflected by the first reflecting member toward a photographing lens. The first reflection member is rotatably provided about an axis extending in a direction orthogonal to an optical axis of a photographing lens in order to change an incident angle of the subject light with respect to the second reflection member. (1) It has a rotational position detecting means for detecting the rotational position of the reflecting member, and the camera has a distance measuring means for detecting the subject distance. Depending on the detected subject distance by the distance measuring means,
A stereo photography apparatus, which is configured to rotate the first reflecting member to change an incident angle of the first reflecting member with respect to the second reflecting member. 21. A stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one frame of film, and a lens shutter camera capable of mounting the stereo adapter on the front end of its photographing lens. In the stereo photography apparatus having the lens shutter camera, the distance measuring means for detecting the subject distance; the focusing mechanism for focusing the photographing lens according to the subject distance detected by the distance measuring means; the stereo for the lens shutter camera Detecting means for detecting whether or not the adapter is attached; and when the detecting means detects attachment of the stereo adapter to the lens shutter camera, adds a predetermined distance to the subject distance detected by the distance measuring means, The photographing lens is focused on the focusing mechanism according to the subject distance added by the predetermined distance. A stereoscopic photography device, comprising: 22. A stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one frame of film, and a lens shutter camera capable of mounting the stereo adapter on the front end of its photographing lens. In the stereo photography apparatus having the lens shutter camera, the distance measuring means for detecting the object distance by receiving the infrared light projected from the light projecting portion toward the object by the light receiving portion; An optical path deflecting unit for advancing and retracting an optical path, which is provided in front of the light receiving unit; an advancing and retreating unit for advancing and retracting the optical path deflecting member toward the front of the light receiving unit; Detecting means for detecting the presence or absence of a stereo adapter; and this detecting means for mounting a stereo adapter on a lens shutter camera. A stereophotographing apparatus comprising: an actuating unit that actuates the advancing / retreating unit to advance the optical path deflecting member to the front of the light receiving unit when an arrival is detected. 23. A stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one frame of film, and a lens shutter camera capable of mounting the stereo adapter on the front end of its photographing lens. In the stereo photography apparatus having, the lens shutter camera has distance measuring means for detecting a subject distance by receiving infrared light projected from the light projecting portion toward the subject by the light receiving portion; and The stereo adapter integrally has an optical path deflecting member for deflecting an optical path, which is located in front of the light receiving section in a state where the stereo adapter is mounted on a lens shutter camera. 24. The stereo photography apparatus according to claim 22, wherein the optical path deflecting member is a prism. 25. A stereo having a stereo adapter for projecting two images of the same subject viewed from different viewpoints adjacent to one frame of film, and a camera capable of mounting the stereo adapter on the front end of its photographing lens. In the photographic device, the camera has an autofocus mechanism; a detection means for detecting whether or not the stereo adapter is attached to the camera; and when the detection means detects the attachment of the stereo adapter to the camera, the autofocus mechanism is used. Shooting distance fixing means for fixing the determined shooting distance to a predetermined shooting distance;
A stereo photography device having: 26. A stereo having a stereo adapter for imprinting two images of the same subject viewed from different viewpoints adjacent to one frame of film, and a camera capable of mounting the stereo adapter on the front end of its photographing lens. In the photographic device, the camera has an automatic exposure mechanism; detection means for detecting whether or not the stereo adapter is attached to the camera; and when the detection means detects attachment of the stereo adapter to the camera, the automatic exposure mechanism is used. A stereo photography apparatus, comprising: an aperture value setting means for setting the aperture size to a predetermined aperture value or less.